Class 10 Science Weightage 2024-25 Blueprint by CBSE, Chapter-Wise Weightage, Marking Scheme

Overview of CBSE Class 10 Science Subject 2025

The CBSE class 10 Science syllabus provides a clear understanding of fields like physics, chemistry, and biology. It also helps in improving a comprehensive understanding of core subjects, critical thinking skills, problem-solving skills, and analytical skills for students aiming for higher studies in science fields. The class 10 science syllabus covers a wide range of topics including fundamental topics like reproduction, electric current and magnetic effects of current, chemical reactions, carbon compounds, evolution, and reflection of light. The annual examination will be on 80 marks and 20 marks will be covered on internal assessment.

Class 10 CBSE Science Syllabus 2025

The Class 10th science syllabus covers a variety of topics across 5 units. In chemical substances, students will learn about the types of chemical reactions, acids, bases, salts, metals, non-metals, and carbon compounds. The second unit, the world of living provides an understanding of life processes, reproduction, heredity, evolution, and control and coordination in animals and plants. The natural phenomena unit includes important topics like the reflection of light, refraction of light, the human eye, and its vision defects. The fourth chapter Effects of Currents gives an understanding of electric currents, magnetic currents, and their effects. The unit of natural resources includes our environment.

CBSE Class 10 Science Chapter Weightage 2025

The chapter-wise weightage of class 10th science subject 2025 is given in the table below:

Important Topics To Study For CBSE Science Class 10th Exam 2025

• Unit 1: Chemical Substances - Nature and Behaviour

Writing and balancing chemical equations, types of chemical reactions, redox reactions, pH scale and its importance, neutralization reaction, preparation and uses of sodium hydroxide, bleaching powder, baking soda, and washing soda, properties of metals and non-metals, reactivity series, corrosion, and its prevention, nomenclature of organic compounds, chemical properties of carbon compounds, differences between saturated and unsaturated hydrocarbons.

• Unit 2: World of Living

Nutrition, respiration, transport, excretion, reproduction in animals and plants, Mendel’s law of inheritance, and sex determination.

• Unit 3: Natural Phenomena

Image formation of mirrors and lenses, laws of reflection and refraction, power of the lens, human eye, dispersion of light, and refraction of light through a prism.

• Unit 4: Effects of Current

Ohm’s law, series and parallel combination of resistors, the heating effect of electric current, the magnetic field around a current-carrying conductor, Fleming’s left-hand rule, and domestic electric circuits.

• Unit 5: Natural Resources

Ozone layer depletion, waste management, biodegradable and non-biodegradable substances.

CBSE Class 10 Science Marking Scheme For Exam And Internal Assessment

The marking scheme for CBSE board class 10 includes an annual examination of 80 marks and an internal assessment of 20 marks which gives a total of 100 marks. The details of the marking scheme are given below:

CBSE Class 10 Science Question Paper Design

The question paper design of science is given in the table below:

• An internal choice of 33% would be provided.
• Typology of questions

1. VSA (Very Short Answer) including objective-type questions.
2. Assertion - Reasoning type questions.
3. SA (Short Answer) and LA (Long Answer).
4. Source-based/ Case-based/ Passage-based/ Integrated assessment questions.

Strategies For Preparing For CBSE Class 10 Science Exam 2025

• Complete the syllabus thoroughly and highlight important topics for effective revision.
• Understand the unit-wise weightage and identify the frequently asked topics
• Focus on basic core concepts to get a strong foundation. Focus on topics like laws of motion, electricity, and light in physics, acids, bases, salts, and carbon compounds in chemistry, and human anatomy, heredity, and reproduction in biology.
• Practice the numerical problems regularly. Use previous years’ question papers and mock tests for a better understanding of the numerical question pattern.
• Focus on diagrams and labelling as they can fetch marks easily.
• Practice sample papers under the same exam conditions to work on time management.
• Focus on the typology of questions asked in the exam
• Keep notes of important laws and formulas.

CBSE Class 10 Important Books For Science 2025

1. Science-Text book for class X-NCERT Publication
2. Assessment of Practical Skills in Science- Class X-CBSE Publication
3. Laboratory Manual-Science-Class X, NCERT Publication
4. Exemplar Problems Class X-NCERT Publication
5. Principle of Physics: S.Chand Books
6. Fundamentals of Physics: Pradeep Publication