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    NSO 2025 Exam - Dates, Eligibility, Application, Pattern, Admit Card

    author
    Mallika ThaledderUpdated on Feb 09, 2026 05:54 PM

    About NSO 2025

    SOF NSO 2025-26 - The Science Olympiad Foundation (SOF) is responsible for conducting the SOF NSO exam. The foundation conducts the exam in two levels, Level 1 and Level 2. Students studying in Classes 1 to 12 can apply for the SOF NSO 2025-26 level 1 exam. Whereas the NSO level 2 exam is held for students from classes 3 to 12. SOF NSO 2025-26 registration is typically concluded 30 days before the exam date. Students can register through their respective schools. 

    • The SOF conducted the NSO 2025-26 level 1 exam on November 13, November 27, and December 11, 2025, for Set A, Set B, and Set C, respectively.
    • The SOF released the NSO answer key for Set A and Set B on December 16, 2025, and December 27, 2025, respectively. The Set C answer key was released on January 2, 2026. 
    • The SOF NSO results is released online on January 12, 2026, through the official website, sofworld.org.
    • The exam is held in offline mode for a duration of 1 hour.
    • The level 2 exam date for SOF NSO 2025-26 is announced. The SOF NSO 2nd-level exam 2026 will be conducted for students of Classes 3 to 12 who qualify for the Level 1 examination. In India, the exam will be held on February 8, 2026, for all regions except Maharashtra, while students from Maharashtra will appear on February 15, 2026. For international participants, the IMO 2nd level exam will take place between February 9 and February 20, 2026.
    • The NSO cut-off 2025-26 was released on January 10, 2026, on the official website. 
    • NSO is an annual scholarship exam that tests students’ scientific reasoning and logical ability.
    • Students need to submit the NSO application form along with the registration fee of Rs. 125 at their respective schools.
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    NSO 2025 Exam - Dates, Eligibility, Application, Pattern, Admit Card
    NSO 2025 Exam - Dates, Eligibility, Application, Pattern, Admit Card

    NSO 2025 Highlights

    Full Exam Name
    National Science Olympiad
    Short Exam Name
    NSO
    Conducting Body
    Science Olympiad Foundation
    Frequency Of Conduct
    Once a year
    Exam Level
    Intermediate
    Languages
    English
    Mode Of Application
    offline
    Application Fee
    Offline : 125
    Mode Of Exam
    offline
    Exam Duration
    1 Hour

    NSO Important Dates

    NSO National Science Olympiad (session 2025)

    The NSO Level 1 cutoff 2025-26 has been released on January 10, 2026. The cut-off has been released a few days before the result announcement. Students can check the current and previous years' cutoff below.

    NSO Cut-Off 2025-26 - 1st Level Top 5%

    The SOF NSO cut-off marks 2025-26 are applicable to determine the top 5% students class-wise, qualifying for the second level.

    ClassTotal MarksAchievers Section (M3)Science (M2)Logical Reasoning (M1)
    3338232
    4316223
    5439268
    6409247
    7399264
    8396258
    9399246
    104112245
    ClassTotal MarksAchievers Section (M3)Physics & Chemistry (M1)

    Science (Mathematics/Biology) (M2)

    113561316
    123591412

    NSO (2023-24) - 1ST LEVEL CUT-OFF TOP-5%

    CLASS

    TOTAL MARKS

    ACHIEVERS SECTION
    [M3]

    SCIENCE
    [M2]

    LOGICAL REASONING
    [M1]

    03

    31

    6

    22

    3

    04

    30

    6

    20

    4

    05

    40

    9

    24

    7

    06

    40

    9

    21

    10

    07

    39

    12

    20

    7

    08

    37

    6

    26

    5

    09

    38

    12

    23

    3

    10

    40

    12

    22

    6

    CLASS

    TOTAL MARKS

    ACHIEVERS SECTION
    [M3]

    PHYSICS & CHEMISTRY
    [M1]

    SCIENCE
    (MATHEMATICS/BIOLOGY)
    [M2]

    11

    32

    12

    9

    11

    12

    35

    9

    12

    14

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    • Students enrolled in classes 1 to 12 are eligible to apply for SOF NSO 2025-26 through their respective years. 
    • A student can apply for the exam once a year.
    • A minimum of 10 students should register from each school for the NSO exam 2025-26.
    Background wave

    • The organising body sends the prospectus of SOF NSO 2025-26 containing registration forms to all schools registered with SOF. 
    • Students need to contact their respective schools to fill out the NSO application form.
    • The schools will then return the duly filled registration forms to SOF along with the application fees within the dates specified.
    • The students' roll numbers will be generated by the coordinating teacher appointed in each school. 
    • They will also send a copy of the roll numbers of students.
    • At least 10 students must be registered from each school for the NSO exam 2025-26.

    Documents Required at Exam NSO 2025

    National Science Olympiad 2025

    Admit Card

    SOF NSO Exam Pattern 2025-26 - Level 1   

    Particulars        NSO 2025 Level 1        
    Type of questions        Multiple Choice Questions (MCQs)        
    Time duration        60 minutes        

    Number of questions and marks

    Class 1 – 4: 35 questions (40 marks)           

    Class 5 – 12: 50 questions (60 marks)

                

    Sections             

            

    Class 1 – 10:

    Section-1: Logical Reasoning
    Section-2: Science
    Section-3: Achievers Section

    Class 11 – 12:

    Section-1: Physics/Chemistry
    Section-2: Achievers Section
    Section-3: Mathematics/ Biology

    Medium of paper        English        

    Syllabus

    CBSE, ICSE/ISC and State Board syllabi             


    NSO 2025 Syllabus

    NSO National Science Olympiad Syllabus

    Class 1-Logical reasoning: Unit 01


    Spatial understanding

      Class 1-Logical reasoning: Unit 02


      Grouping

        Class 1-Logical reasoning: Unit 03


        Measuring units

          Class 1-Logical reasoning: Unit 04


          Analogy

            Class 1-Logical reasoning: Unit 05


            Geometrical shapes

              Class 1-Logical reasoning: Unit 06


              Patterns

                Class 1-Logical reasoning: Unit 07


                Odd one out

                  Class 1-Logical reasoning: Unit 08


                  Ranking test

                    Class 1-Science: Unit 01


                    Living and non-living things

                      Class 1-Science: Unit 02


                      Plants

                        Class 1-Science: Unit 03


                        Animals

                          Class 1-Science: Unit 04


                          Human beings and their needs

                            Class 1-Science: Unit 05


                            Good habits and safety rules

                              Class 1-Science: Unit 06


                              Air and water

                                Class 1-Science: Unit 07


                                Weather and the sky

                                  Class 2-Logical reasoning: Unit 01


                                  Patterns

                                    Class 2-Logical reasoning: Unit 02


                                    Measuring units

                                      Class 2-Logical reasoning: Unit 03


                                      Odd one out

                                        Class 2-Logical reasoning: Unit 04


                                        Series completion

                                          Class 2-Logical reasoning: Unit 05


                                          Geometrical shapes

                                            Class 2-Logical reasoning: Unit 06


                                            Analogy

                                              Class 2-Logical reasoning: Unit 07


                                              Ranking test

                                                Class 2-Logical reasoning: Unit 08


                                                Grouping of figures

                                                  Class 2-Logical reasoning: Unit 09


                                                  Coding-decoding

                                                    Class 2-Logical reasoning: Unit 10


                                                    Embedded figures

                                                      Class 2-Science: Unit 01


                                                      Plants

                                                        Class 2-Science: Unit 02


                                                        Animals

                                                          Class 2-Science: Unit 03


                                                          Human body

                                                            Class 2-Science: Unit 04


                                                            Food

                                                              Class 2-Science: Unit 05


                                                              Housing and clothing

                                                                Class 2-Science: Unit 06


                                                                Family and festivals

                                                                  Class 2-Science: Unit 07


                                                                  Good habits and safety rules

                                                                    Class 2-Science: Unit 08


                                                                    Transport and communication

                                                                      Class 2-Science: Unit 09


                                                                      Air

                                                                        Class 2-Science: Unit 10


                                                                        Water and rocks

                                                                          Class 2-Science: Unit 11


                                                                          Earth and Universe

                                                                            Class 3-Logical reasoning: Unit 01


                                                                            Patterns

                                                                              Class 3-Logical reasoning: Unit 02


                                                                              Analogy and classification

                                                                                Class 3-Logical reasoning: Unit 03


                                                                                Coding-decoding

                                                                                  Class 3-Logical reasoning: Unit 04


                                                                                  Mirror images

                                                                                    Class 3-Logical reasoning: Unit 05


                                                                                    Embedded figures

                                                                                      Class 3-Logical reasoning: Unit 06


                                                                                      Alphabet test

                                                                                        Class 3-Logical reasoning: Unit 07


                                                                                        Ranking test

                                                                                          Class 3-Logical reasoning: Unit 08


                                                                                          Grouping of figures

                                                                                            Class 3-Logical reasoning: Unit 09


                                                                                            Figure matrix

                                                                                              Class 3-Logical reasoning: Unit 10


                                                                                              Geometrical shapes

                                                                                                Class 3-Logical reasoning: Unit 11


                                                                                                Days and dates, and possible combinations

                                                                                                  Class 3-Science: Unit 01


                                                                                                  Plants and animals

                                                                                                    Class 3-Science: Unit 02


                                                                                                    Birds

                                                                                                      Class 3-Science: Unit 03


                                                                                                      Food

                                                                                                        Class 3-Science: Unit 04


                                                                                                        Housing

                                                                                                          Class 3-Science: Unit 05


                                                                                                          Clothing and occupation

                                                                                                            Class 3-Science: Unit 06


                                                                                                            Transport

                                                                                                              Class 3-Science: Unit 07


                                                                                                              Communication and safety rules

                                                                                                                Class 3-Science: Unit 08


                                                                                                                Human body

                                                                                                                  Class 3-Science: Unit 09


                                                                                                                  Earth and Universe

                                                                                                                    Class 3-Science: Unit 10


                                                                                                                    Matter and materials

                                                                                                                      Class 3-Science: Unit 11


                                                                                                                      Light

                                                                                                                        Class 3-Science: Unit 12


                                                                                                                        Sound and force

                                                                                                                          Class 3-Science: Unit 13


                                                                                                                          Our environment

                                                                                                                            Class 4-Logical reasoning: Unit 01


                                                                                                                            Patterns

                                                                                                                              Class 4-Logical reasoning: Unit 02


                                                                                                                              Alphabet test

                                                                                                                                Class 4-Logical reasoning: Unit 03


                                                                                                                                Coding-decoding

                                                                                                                                  Class 4-Logical reasoning: Unit 04


                                                                                                                                  Mirror images

                                                                                                                                    Class 4-Logical reasoning: Unit 05


                                                                                                                                    Embedded figures

                                                                                                                                      Class 4-Logical reasoning: Unit 06


                                                                                                                                      Geometrical shapes and solids

                                                                                                                                        Class 4-Logical reasoning: Unit 07


                                                                                                                                        Ranking test

                                                                                                                                          Class 4-Logical reasoning: Unit 08


                                                                                                                                          Direction sense test

                                                                                                                                            Class 4-Logical reasoning: Unit 09


                                                                                                                                            Days and dates, and possible combinations

                                                                                                                                              Class 4-Logical reasoning: Unit 10


                                                                                                                                              Analogy and classification

                                                                                                                                                Class 4-Science: Unit 01


                                                                                                                                                Plants

                                                                                                                                                  Class 4-Science: Unit 02


                                                                                                                                                  Animals

                                                                                                                                                    Class 4-Science: Unit 03


                                                                                                                                                    Food and digestion

                                                                                                                                                      Class 4-Science: Unit 04


                                                                                                                                                      Human needs

                                                                                                                                                        Class 4-Science: Unit 05


                                                                                                                                                        Matter and materials

                                                                                                                                                          Class 4-Science: Unit 06


                                                                                                                                                          Force

                                                                                                                                                            Class 4-Science: Unit 07


                                                                                                                                                            Work and energy

                                                                                                                                                              Class 4-Science: Unit 08


                                                                                                                                                              Our environment

                                                                                                                                                                Class 4-Science: Unit 09


                                                                                                                                                                Earth and Universe

                                                                                                                                                                  Class 5-Logical reasoning: Unit 01


                                                                                                                                                                  Patterns

                                                                                                                                                                    Class 5-Logical reasoning: Unit 02


                                                                                                                                                                    Analogy and classification

                                                                                                                                                                      Class 5-Logical reasoning: Unit 03


                                                                                                                                                                      Coding-decoding

                                                                                                                                                                        Class 5-Logical reasoning: Unit 04


                                                                                                                                                                        Geometrical shapes

                                                                                                                                                                          Class 5-Logical reasoning: Unit 05


                                                                                                                                                                          Mirror images

                                                                                                                                                                            Class 5-Logical reasoning: Unit 06


                                                                                                                                                                            Water images

                                                                                                                                                                              Class 5-Logical reasoning: Unit 07


                                                                                                                                                                              Embedded figures

                                                                                                                                                                                Class 5-Logical reasoning: Unit 08


                                                                                                                                                                                Direction sense test

                                                                                                                                                                                  Class 5-Logical reasoning: Unit 09


                                                                                                                                                                                  Ranking test

                                                                                                                                                                                    Class 5-Logical reasoning: Unit 10


                                                                                                                                                                                    Alphabet test and Logical sequence of words

                                                                                                                                                                                      Class 5-Logical reasoning: Unit 11


                                                                                                                                                                                      Puzzle test

                                                                                                                                                                                        Class 5-Science: Unit 01


                                                                                                                                                                                        Animals

                                                                                                                                                                                          Class 5-Science: Unit 02


                                                                                                                                                                                          Human body and health

                                                                                                                                                                                            Class 5-Science: Unit 03


                                                                                                                                                                                            Plants

                                                                                                                                                                                              Class 5-Science: Unit 05


                                                                                                                                                                                              Pollution and calamities

                                                                                                                                                                                                Class 5-Science: Unit 06


                                                                                                                                                                                                Earth and Universe

                                                                                                                                                                                                  Class 5-Science: Unit 07


                                                                                                                                                                                                  Matter and materials

                                                                                                                                                                                                    Class 5-Science: Unit 08


                                                                                                                                                                                                    Force and energy

                                                                                                                                                                                                      Class 6-Logical reasoning: Unit 01


                                                                                                                                                                                                      Verbal and non-verbal reasoning

                                                                                                                                                                                                        Class 6-Science: Unit 01


                                                                                                                                                                                                        Motion and measurement of distances

                                                                                                                                                                                                          Class 6-Science: Unit 02


                                                                                                                                                                                                          Light

                                                                                                                                                                                                            Class 6-Science: Unit 03


                                                                                                                                                                                                            Shadows and reflections

                                                                                                                                                                                                              Class 6-Science: Unit 04


                                                                                                                                                                                                              Electricity and circuits

                                                                                                                                                                                                                Class 6-Science: Unit 05


                                                                                                                                                                                                                Fun with magnets

                                                                                                                                                                                                                  Class 6-Science: Unit 06


                                                                                                                                                                                                                  Our environment
                                                                                                                                                                                                                  • Water, air around us, garbage in garbage out

                                                                                                                                                                                                                  Class 6-Science: Unit 07


                                                                                                                                                                                                                  Sorting and separation of materials

                                                                                                                                                                                                                    Class 6-Science: Unit 08


                                                                                                                                                                                                                    Changes around us

                                                                                                                                                                                                                      Class 6-Science: Unit 09


                                                                                                                                                                                                                      The world of living
                                                                                                                                                                                                                      • Characteristics of living beings, parts of plants, body movements in animals and adaptation

                                                                                                                                                                                                                      Class 6-Science: Unit 10


                                                                                                                                                                                                                      Food and its components

                                                                                                                                                                                                                        Class 6-Science: Unit 11


                                                                                                                                                                                                                        Fibre to fabric

                                                                                                                                                                                                                          Class 7-Logical reasoning: Unit 01


                                                                                                                                                                                                                          Verbal and non-verbal reasoning

                                                                                                                                                                                                                            Class 7-Science: Unit 01


                                                                                                                                                                                                                            Heat

                                                                                                                                                                                                                              Class 7-Science: Unit 02


                                                                                                                                                                                                                              Motion and Time

                                                                                                                                                                                                                                Class 7-Science: Unit 03


                                                                                                                                                                                                                                Electric current and its effects

                                                                                                                                                                                                                                  Class 7-Science: Unit 04


                                                                                                                                                                                                                                  Winds

                                                                                                                                                                                                                                    Class 7-Science: Unit 05


                                                                                                                                                                                                                                    Storms and cyclones

                                                                                                                                                                                                                                      Class 7-Science: Unit 06


                                                                                                                                                                                                                                      Light

                                                                                                                                                                                                                                        Class 7-Science: Unit 07


                                                                                                                                                                                                                                        Acids

                                                                                                                                                                                                                                          Class 7-Science: Unit 08


                                                                                                                                                                                                                                          Bases and salts

                                                                                                                                                                                                                                            Class 7-Science: Unit 09


                                                                                                                                                                                                                                            Physical and chemical changes

                                                                                                                                                                                                                                              Class 7-Science: Unit 10


                                                                                                                                                                                                                                              Weather

                                                                                                                                                                                                                                                Class 7-Science: Unit 12


                                                                                                                                                                                                                                                Fibre to fabric

                                                                                                                                                                                                                                                  Class 7-Science: Unit 13


                                                                                                                                                                                                                                                  Nutrition in plants and animals

                                                                                                                                                                                                                                                    Class 7-Science: Unit 14


                                                                                                                                                                                                                                                    Respiration in organisms

                                                                                                                                                                                                                                                      Class 7-Science: Unit 15


                                                                                                                                                                                                                                                      Transportation in plants and animals

                                                                                                                                                                                                                                                        Class 7-Science: Unit 16


                                                                                                                                                                                                                                                        Reproduction in plants

                                                                                                                                                                                                                                                          Class 7-Science: Unit 17


                                                                                                                                                                                                                                                          Natural resources and their conservation
                                                                                                                                                                                                                                                          • Soil, water: A precious resource, forests our lifeline, wastewater story

                                                                                                                                                                                                                                                          Class 8-Logical reasoning: Unit 01


                                                                                                                                                                                                                                                          Verbal and non-verbal reasoning

                                                                                                                                                                                                                                                            Class 8-Science: Unit 01


                                                                                                                                                                                                                                                            Crop production and management

                                                                                                                                                                                                                                                              Class 8-Science: Unit 02


                                                                                                                                                                                                                                                              Microorganisms

                                                                                                                                                                                                                                                                Class 8-Science: Unit 03


                                                                                                                                                                                                                                                                Synthetic fibres and plastics

                                                                                                                                                                                                                                                                  Class 8-Science: Unit 04


                                                                                                                                                                                                                                                                  Metals and non-metals

                                                                                                                                                                                                                                                                    Class 8-Science: Unit 05


                                                                                                                                                                                                                                                                    Coal and petroleum

                                                                                                                                                                                                                                                                      Class 8-Science: Unit 06


                                                                                                                                                                                                                                                                      Combustion and flame

                                                                                                                                                                                                                                                                        Class 8-Science: Unit 07


                                                                                                                                                                                                                                                                        Conservation of plants and animals

                                                                                                                                                                                                                                                                          Class 8-Science: Unit 08


                                                                                                                                                                                                                                                                          Cell

                                                                                                                                                                                                                                                                            Class 8-Science: Unit 09


                                                                                                                                                                                                                                                                            Reproduction and endocrine system

                                                                                                                                                                                                                                                                              Class 8-Science: Unit 10


                                                                                                                                                                                                                                                                              Force and pressure

                                                                                                                                                                                                                                                                                Class 8-Science: Unit 11


                                                                                                                                                                                                                                                                                Friction

                                                                                                                                                                                                                                                                                  Class 8-Science: Unit 12


                                                                                                                                                                                                                                                                                  Sound

                                                                                                                                                                                                                                                                                    Class 8-Science: Unit 13


                                                                                                                                                                                                                                                                                    Chemical effects of electric current

                                                                                                                                                                                                                                                                                      Class 8-Science: Unit 14


                                                                                                                                                                                                                                                                                      Some natural phenomena

                                                                                                                                                                                                                                                                                        Class 8-Science: Unit 15


                                                                                                                                                                                                                                                                                        Light

                                                                                                                                                                                                                                                                                          Class 8-Science: Unit 16


                                                                                                                                                                                                                                                                                          Stars and the solar system

                                                                                                                                                                                                                                                                                            Class 8-Science: Unit 17


                                                                                                                                                                                                                                                                                            Pollution of air and water

                                                                                                                                                                                                                                                                                              Class 9-Logical reasoning: Unit 01


                                                                                                                                                                                                                                                                                              Verbal and non-verbal reasoning

                                                                                                                                                                                                                                                                                                Class 9-Science: Unit 01


                                                                                                                                                                                                                                                                                                Motion

                                                                                                                                                                                                                                                                                                  Class 9-Science: Unit 02


                                                                                                                                                                                                                                                                                                  Force and laws of motion

                                                                                                                                                                                                                                                                                                    Class 9-Science: Unit 03


                                                                                                                                                                                                                                                                                                    Gravitation

                                                                                                                                                                                                                                                                                                      Class 9-Science: Unit 04


                                                                                                                                                                                                                                                                                                      Work and energy

                                                                                                                                                                                                                                                                                                        Class 9-Science: Unit 05


                                                                                                                                                                                                                                                                                                        Sound

                                                                                                                                                                                                                                                                                                          Class 9-Science: Unit 06


                                                                                                                                                                                                                                                                                                          Matter in our surroundings

                                                                                                                                                                                                                                                                                                            Class 9-Science: Unit 07


                                                                                                                                                                                                                                                                                                            Is matter around us pure

                                                                                                                                                                                                                                                                                                              Class 9-Science: Unit 08


                                                                                                                                                                                                                                                                                                              Atoms and molecules

                                                                                                                                                                                                                                                                                                                Class 9-Science: Unit 09


                                                                                                                                                                                                                                                                                                                Structure of atom

                                                                                                                                                                                                                                                                                                                  Class 9-Science: Unit 10


                                                                                                                                                                                                                                                                                                                  Cell-the fundamental unit of life

                                                                                                                                                                                                                                                                                                                    Class 9-Science: Unit 11


                                                                                                                                                                                                                                                                                                                    Tissues

                                                                                                                                                                                                                                                                                                                      Class 9-Science: Unit 12


                                                                                                                                                                                                                                                                                                                      Diversity in living organisms

                                                                                                                                                                                                                                                                                                                        Class 9-Science: Unit 13


                                                                                                                                                                                                                                                                                                                        Why do we fall ill

                                                                                                                                                                                                                                                                                                                          Class 9-Science: Unit 14


                                                                                                                                                                                                                                                                                                                          Natural resources

                                                                                                                                                                                                                                                                                                                            Class 9-Science: Unit 15


                                                                                                                                                                                                                                                                                                                            Improvement in food resources

                                                                                                                                                                                                                                                                                                                              Class 10-Logical reasoning: Unit 01


                                                                                                                                                                                                                                                                                                                              Verbal and non-verbal reasoning

                                                                                                                                                                                                                                                                                                                                Class 10-Science: Unit 01


                                                                                                                                                                                                                                                                                                                                Chemical reactions and equations

                                                                                                                                                                                                                                                                                                                                  Class 10-Science: Unit 02


                                                                                                                                                                                                                                                                                                                                  Acids

                                                                                                                                                                                                                                                                                                                                    Class 10-Science: Unit 03


                                                                                                                                                                                                                                                                                                                                    Bases and salts

                                                                                                                                                                                                                                                                                                                                      Class 10-Science: Unit 04


                                                                                                                                                                                                                                                                                                                                      Metals and non-metals

                                                                                                                                                                                                                                                                                                                                        Class 10-Science: Unit 05


                                                                                                                                                                                                                                                                                                                                        Carbon and its compounds

                                                                                                                                                                                                                                                                                                                                          Class 10-Science: Unit 06


                                                                                                                                                                                                                                                                                                                                          Periodic classification of elements

                                                                                                                                                                                                                                                                                                                                            Class 10-Science: Unit 07


                                                                                                                                                                                                                                                                                                                                            Life processes

                                                                                                                                                                                                                                                                                                                                              Class 10-Science: Unit 08


                                                                                                                                                                                                                                                                                                                                              Control and coordination

                                                                                                                                                                                                                                                                                                                                                Class 10-Science: Unit 09


                                                                                                                                                                                                                                                                                                                                                Reproduction in organisms

                                                                                                                                                                                                                                                                                                                                                  Class 10-Science: Unit 10


                                                                                                                                                                                                                                                                                                                                                  Heredity and evolution

                                                                                                                                                                                                                                                                                                                                                    Class 10-Science: Unit 11


                                                                                                                                                                                                                                                                                                                                                    Light-reflection and refraction

                                                                                                                                                                                                                                                                                                                                                      Class 10-Science: Unit 12


                                                                                                                                                                                                                                                                                                                                                      Human eye and colourful world

                                                                                                                                                                                                                                                                                                                                                        Class 10-Science: Unit 13


                                                                                                                                                                                                                                                                                                                                                        Electricity

                                                                                                                                                                                                                                                                                                                                                          Class 10-Science: Unit 14


                                                                                                                                                                                                                                                                                                                                                          Magnetic effects of electric current

                                                                                                                                                                                                                                                                                                                                                            Class 10-Science: Unit 15


                                                                                                                                                                                                                                                                                                                                                            Sources of energy

                                                                                                                                                                                                                                                                                                                                                              Class 10-Science: Unit 16


                                                                                                                                                                                                                                                                                                                                                              Our environment and its management

                                                                                                                                                                                                                                                                                                                                                                Class 11-Physics: Unit 01


                                                                                                                                                                                                                                                                                                                                                                Units and measurements

                                                                                                                                                                                                                                                                                                                                                                  Class 11-Physics: Unit 02


                                                                                                                                                                                                                                                                                                                                                                  Mechanics

                                                                                                                                                                                                                                                                                                                                                                    Class 11-Physics: Unit 03


                                                                                                                                                                                                                                                                                                                                                                    Properties of matter

                                                                                                                                                                                                                                                                                                                                                                      Class 11-Physics: Unit 04


                                                                                                                                                                                                                                                                                                                                                                      Heat and thermodynamics

                                                                                                                                                                                                                                                                                                                                                                        Class 11-Physics: Unit 05


                                                                                                                                                                                                                                                                                                                                                                        Oscillations

                                                                                                                                                                                                                                                                                                                                                                          Class 11-Physics: Unit 06


                                                                                                                                                                                                                                                                                                                                                                          Waves

                                                                                                                                                                                                                                                                                                                                                                            Class 11-Chemistry: Unit 01


                                                                                                                                                                                                                                                                                                                                                                            Some basic concepts of chemistry

                                                                                                                                                                                                                                                                                                                                                                              Class 11-Chemistry: Unit 02


                                                                                                                                                                                                                                                                                                                                                                              Structure of atom

                                                                                                                                                                                                                                                                                                                                                                                Class 11-Chemistry: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                Chemical bonding and molecular structure

                                                                                                                                                                                                                                                                                                                                                                                  Class 11-Chemistry: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                  States of matter

                                                                                                                                                                                                                                                                                                                                                                                    Class 11-Chemistry: Unit 06


                                                                                                                                                                                                                                                                                                                                                                                    Thermodynamics

                                                                                                                                                                                                                                                                                                                                                                                      Class 11-Chemistry: Unit 07


                                                                                                                                                                                                                                                                                                                                                                                      Equilibrium

                                                                                                                                                                                                                                                                                                                                                                                        Class 11-Chemistry: Unit 08


                                                                                                                                                                                                                                                                                                                                                                                        Redox reactions

                                                                                                                                                                                                                                                                                                                                                                                          Class 11-Chemistry: Unit 09


                                                                                                                                                                                                                                                                                                                                                                                          Hydrogen

                                                                                                                                                                                                                                                                                                                                                                                            Class 11-Chemistry: Unit 10


                                                                                                                                                                                                                                                                                                                                                                                            The s-block elements

                                                                                                                                                                                                                                                                                                                                                                                              Class 11-Chemistry: Unit 11


                                                                                                                                                                                                                                                                                                                                                                                              The p-block elements (groups 13 and 14)

                                                                                                                                                                                                                                                                                                                                                                                                Class 11-Chemistry: Unit 13


                                                                                                                                                                                                                                                                                                                                                                                                Coordination compounds

                                                                                                                                                                                                                                                                                                                                                                                                  Class 11-Chemistry: Unit 14


                                                                                                                                                                                                                                                                                                                                                                                                  Haloalkanes and Haloarenes

                                                                                                                                                                                                                                                                                                                                                                                                    Class 11-Mathematics: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                    Sets

                                                                                                                                                                                                                                                                                                                                                                                                      Class 11-Mathematics: Unit 02


                                                                                                                                                                                                                                                                                                                                                                                                      Relations and Functions

                                                                                                                                                                                                                                                                                                                                                                                                        Class 11-Mathematics: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                        Principle of mathematical induction

                                                                                                                                                                                                                                                                                                                                                                                                          Class 11-Mathematics: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                          Logarithms

                                                                                                                                                                                                                                                                                                                                                                                                            Class 11-Mathematics: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                            Complex numbers and quadratic equations

                                                                                                                                                                                                                                                                                                                                                                                                              Class 11-Mathematics: Unit 06


                                                                                                                                                                                                                                                                                                                                                                                                              Linear inequations

                                                                                                                                                                                                                                                                                                                                                                                                                Class 11-Mathematics: Unit 07


                                                                                                                                                                                                                                                                                                                                                                                                                Sequences and series

                                                                                                                                                                                                                                                                                                                                                                                                                  Class 11-Mathematics: Unit 08


                                                                                                                                                                                                                                                                                                                                                                                                                  Trigonometry

                                                                                                                                                                                                                                                                                                                                                                                                                    Class 11-Mathematics: Unit 09


                                                                                                                                                                                                                                                                                                                                                                                                                    Straight lines

                                                                                                                                                                                                                                                                                                                                                                                                                      Class 11-Mathematics: Unit 10


                                                                                                                                                                                                                                                                                                                                                                                                                      Conic sections

                                                                                                                                                                                                                                                                                                                                                                                                                        Class 11-Mathematics: Unit 11


                                                                                                                                                                                                                                                                                                                                                                                                                        Permutations and combinations

                                                                                                                                                                                                                                                                                                                                                                                                                          Class 11-Mathematics: Unit 12


                                                                                                                                                                                                                                                                                                                                                                                                                          Binomial theorem

                                                                                                                                                                                                                                                                                                                                                                                                                            Class 11-Mathematics: Unit 13


                                                                                                                                                                                                                                                                                                                                                                                                                            Statistics

                                                                                                                                                                                                                                                                                                                                                                                                                              Class 11-Mathematics: Unit 14


                                                                                                                                                                                                                                                                                                                                                                                                                              Mathematical reasoning

                                                                                                                                                                                                                                                                                                                                                                                                                                Class 11-Mathematics: Unit 15


                                                                                                                                                                                                                                                                                                                                                                                                                                Limits and derivatives

                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 11-Mathematics: Unit 16


                                                                                                                                                                                                                                                                                                                                                                                                                                  Probability

                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 11-Mathematics: Unit 17


                                                                                                                                                                                                                                                                                                                                                                                                                                    Introduction to 3-d geometry

                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 11-Biology: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                                                      Diversity in the living world

                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 11-Biology: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                                                        Cell-structure and functions

                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 11-Biology: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                                                          Plant physiology

                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 11-Biology: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                                                            Human physiology

                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Physics: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                                                              Electricity and magnetism

                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Physics: Unit 02


                                                                                                                                                                                                                                                                                                                                                                                                                                                Electromagnetic induction

                                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 12-Physics: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                                                                  Alternating current

                                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 12-Physics: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                                                                    Electromagnetic waves

                                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 12-Physics: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                                                                      Optics

                                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 12-Physics: Unit 06


                                                                                                                                                                                                                                                                                                                                                                                                                                                        Modern physics

                                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 12-Physics: Unit 07


                                                                                                                                                                                                                                                                                                                                                                                                                                                          Semiconductor electronics

                                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 12-Physics: Unit 08


                                                                                                                                                                                                                                                                                                                                                                                                                                                            Communication systems

                                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Chemistry: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                                                                              Solid state

                                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Chemistry: Unit 02


                                                                                                                                                                                                                                                                                                                                                                                                                                                                Solutions

                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 12-Chemistry: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Electrochemistry

                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 12-Chemistry: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Chemical kinetics

                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 12-Chemistry: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Surface chemistry

                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 12-Chemistry: Unit 07


                                                                                                                                                                                                                                                                                                                                                                                                                                                                        p-block elements (group 15 to 18)

                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 12-Chemistry: Unit 08


                                                                                                                                                                                                                                                                                                                                                                                                                                                                          d-and f-block elements

                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 12-Chemistry: Unit 09


                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Coordination compounds

                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Chemistry: Unit 10


                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Haloalkanes and Haloarenes

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Chemistry: Unit 11


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Alcohols

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 12-Chemistry: Unit 12


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Phenols and ethers

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 12-Chemistry: Unit 13


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Aldehydes

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 12-Chemistry: Unit 14


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Ketones and carboxylic acids

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 12-Chemistry: Unit 15


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Amines

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 12-Chemistry: Unit 16


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Biomolecules

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 12-Chemistry: Unit 17


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Polymers

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Chemistry: Unit 18


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Chemistry in everyday life

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Mathematics: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Relations and Functions

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 12-Mathematics: Unit 02


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Inverse trigonometric functions

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 12-Mathematics: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Matrices and determinants

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 12-Mathematics: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Continuity and differentiability

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 12-Mathematics: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Application of derivatives

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 12-Mathematics: Unit 06


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Integrals

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 12-Mathematics: Unit 07


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Application of integrals

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Mathematics: Unit 08


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Differential equations

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Mathematics: Unit 09


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Vector algebra

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Class 12-Mathematics: Unit 10


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Three dimensional geometry

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Class 12-Mathematics: Unit 11


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Probability

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Class 12-Mathematics: Unit 12


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Linear programming

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Class 12-Biology: Unit 01


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Reproduction

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Class 12-Biology: Unit 02


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Genetics and evolution

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Class 12-Biology: Unit 03


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Biology in human welfare

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Class 12-Biology: Unit 04


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Biotechnology

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Class 12-Biology: Unit 05


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Ecology
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Students who are preparing for the National Science Olympiad 2025-26 should solve the sample papers for a better understanding of the exam pattern and syllabus. 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Students can also check their preparation level by solving the sample papers.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Sample papers also help students improve their performance in the SOF NSO 2025-26 examination.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  The foundation releases the Level 1 exam admit cards one or two weeks before the exams. Students can collect their NSO admit cards from the respective school authorities. Whereas, the candidates can download the NSO admit card for the level 2 exam from the official website. 

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • The SOF released the NSO answer key for Set A and Set B on December 16, 2025, and December 27, 2025, respectively. The Set C answer key was released on January 2, 2026. 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Class 1 to 12 students can download the National Science Olympiad answer keys by visiting the link given above.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • The answer keys contain all the correct answers to SOF NSO 2025-26.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • The Science Olympiad Foundation announced the result online. The level 1 exam results have been released on January 12, 2026.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  • Students can check their results by visiting their respective schools or accessing them online on SOF’s official website. 

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  General Information

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Contact Number:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  01244951200 + 2 more

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Relevant Links:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Official Website Link Click Here, + 6 more

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Frequently Asked Questions (FAQs)

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Q: When will the foundation release the SOF NSO answer key 2025-26?
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  A:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  The SOF NSO answer keys for Set A, Set B, and Set C were released on December 16 and 27, 2025, and January 2, 2026, respectively. 

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Q: Which is the best book for NSO 2025-26?
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  A:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Students have to follow their course books and solve the NSO sample papers to prepare for the NSO exam.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Q: Is there any negative marking in NSO exam?
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  A:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  No, there is no negative marking in the NSO exam 2025-26.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Q: How to know my NSO Exam Centres?
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  A:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  NSO exam is held at the respective schools within school hours only.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Q: Can less than 10 students apply for NSO exam from a school?
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  A:

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  No, SOF does not accept less than 10 applications from a school.

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Upcoming School Exams

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Questions related to NSO

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  On Question asked by student community

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Have a question related to NSO ?

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hey Jagrati! For preparing NSO (Class 7, KV-2 Gwalior) in 2025-26, the most important thing is to first understand the syllabus and exam pattern. Start with your NCERT Class 6 and 7 Science books because most of the questions are based on those concepts. Along with this, keep practicing reasoning

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  hi,

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  the date for the NSO result has not been officially declared by the authorities but as per the information the NSO is likely to declare its results in march 2025 , of the level 2 exam which was held on February 9 2025 .

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  to get more information keep

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Hello

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Lost admin card for an NSO (National Science Olympiad) exam .

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  To get a lost admit card , visit the official exam website , log in with your registration details and re-download it . If you are unable to do so then to recover it , I recommend reaching

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