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Class 10 Science Weightage 2024-25 Blueprint by CBSE, Chapter-Wise Weightage, Marking Scheme
The Central Board of Secondary Education (CBSE) class 10 is one of the crucial steps in a student’s academic career. The CBSE class 10 board exams are going to be conducted from 15 February 2025 to 18 March 2025. As the class 10th board exams are approaching students must complete the entire syllabus. Students need to get a clear understanding of the marking scheme, chapter weightage, and exam structure to score higher grades.
This Story also Contains
- Overview of CBSE Class 10 Science Subject 2025
- Class 10 CBSE Science Syllabus 2025
- CBSE Class 10 Science Chapter Weightage 2025
- Important Topics To Study For CBSE Science Class 10th Exam 2025
- CBSE Class 10 Science Marking Scheme For Exam And Internal Assessment
- CBSE Class 10 Science Question Paper Design
- Strategies For Preparing For CBSE Class 10 Science Exam 2025
- CBSE Class 10 Important Books For Science 2025
In this article, we will discuss the CBSE Class 10 science syllabus 2025, class 10 science unit-wise weightage 2025, important topics to study for the class 10 science exam 2025, science marking scheme for exam and internal assessment 2025, question paper design of science subject 2025, strategies to prepare for science class 10 exam 2025 and important books for preparing for the exam.
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 10th Syllabus 2025-26
Students can access the subject-wise CBSE Class 10 syllabus for the 2025–26 academic session.
Check NowUnit | Topics |
|---|---|
Unit I: Chemical Substances - Nature and Behaviour | Chemical Reactions, Acids, Bases and Salts, Metals and Nonmetals, Carbon Compounds |
Unit II: World of Living | Life Processes, Control and Coordination, Reproduction, Heredity and Evolution |
Unit III: Natural Phenomena | Reflection and Refraction of Light, Human Eye and Defects of Vision |
Unit IV: Effects of Current | Electric Current and Its Effects, Magnetic Effects of Current |
Unit V: Natural Resources | Environment and Eco-systems |
CBSE Class 10 Science Chapter Weightage 2025
The chapter-wise weightage of class 10th science subject 2025 is given in the table below:
Unit No. | Unit | Marks |
|---|---|---|
I | Chemical Substances - Nature and Behaviour | 25 |
II | World of Living | 25 |
III | Natural Phenomena | 12 |
IV | Effects of Current | 13 |
V | Natural Resources | 5 |
Total | 80 | |
Internal Assessment | 20 | |
Grand Total | 100 |
Recommended eBooks
Related eBooks & Sample Papers
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:
| Examination Component | Marks |
|---|---|
Annual Examination | 80 marks |
Internal Assessment | 20 marks |
| Internal Assessment Component | Details | Marks |
|---|---|---|
Periodic Assessment | Three periodic tests were conducted by the school. The average of the best two tests contributes to the final result. | 5 marks |
Diverse Methods of Assessment | Includes short tests, oral tests, quizzes, concept maps, projects, posters, presentations, scientific investigations, etc., with rubrics for objective evaluation. | 5 marks |
Practical/Laboratory Work | Continuous practical work throughout the year. Students must maintain a record. All practicals listed in the syllabus must be completed. | 5 marks |
Portfolio | Includes classwork, projects, presentations, and other student work samples. Maintained throughout the year. | 5 marks |
CBSE Class 10 Science Question Paper Design
The question paper design of science is given in the table below:
Competencies | Percentage (%) | Skills/Actions Involved |
|---|---|---|
Demonstrate Knowledge and Understanding | 46% | State, name, list, identify, define, suggest, describe, outline, summarise, etc. |
Application of Knowledge/Concepts | 22% | Calculate, illustrate, show, adapt, explain, distinguish, etc. |
Formulate, Analyze, Evaluate, and Create | 32% | Interpret, analyze, compare, contrast, examine, evaluate, discuss, construct, etc. |
- An internal choice of 33% would be provided.
- Typology of questions
- VSA (Very Short Answer) including objective-type questions.
- Assertion - Reasoning type questions.
- SA (Short Answer) and LA (Long Answer).
- 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
- Science-Text book for class X-NCERT Publication
- Assessment of Practical Skills in Science- Class X-CBSE Publication
- Laboratory Manual-Science-Class X, NCERT Publication
- Exemplar Problems Class X-NCERT Publication
- Principle of Physics: S.Chand Books
- Fundamentals of Physics: Pradeep Publication
Frequently Asked Questions (FAQs)
Q: What are the total marks for the CBSE class 10 Exam 2025?
A:
The CBSE class 10 exam will be of 100 marks. The annual examination will be on 80 marks and 20 marks for internal assessment.
Q: Are CBSE board exams 2025 likely to begin on February 15, 2025?
A:
The CBSE Board Class 10 Examination 2025 is going to be conducted from 15th February 2025 to 18TH March 2025.
Q: Has CBSE released the syllabus for class 10 2025?
A:
CBSE has released the syllabus for class 10 2025 on its official website https://cbseacademic.nic.in/.
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On Question asked by student community
Have a question related to CBSE Class 10th ?
Hello,
If you want to get your 10th marksheet online, you just need to visit an official website like https://www.cbse.gov.in/ or https://results.cbse.nic.in/ for the CBSE board, and for the state board, you can check their website and provide your roll number, security PIN provided by the school, and school code to download the result.
I hope it will clear your query!!
Hello
You asked about Class 10 sample paper board exam and most important questions. Practicing sample papers and previous year questions is one of the best ways to prepare for the board exam because it gives a clear idea of the exam pattern and types of questions asked. Schools and teachers usually recommend students to solve at least the last five years question papers along with model papers released by the board.
For Class 10 board exams, the most important areas are Mathematics, Science, Social Science, English, and Hindi or regional language. In Mathematics, questions from Algebra, Linear Equations, Geometry, Trigonometry, Statistics, and Probability are repeatedly seen. For Science, the key chapters are Chemical Reactions, Acids Bases and Salts, Metals and Non metals, Life Processes, Heredity, Light and Electricity. In Social Science, priority should be given to Nationalism, Resources and Development, Agriculture, Power Sharing, Democratic Politics, and Economics related topics. In English, focus on unseen passages, grammar exercises, and important writing tasks like letter writing and essays.
CBSE Sample Papers 2026: How to Download
Follow these steps to access the SQPs and marking schemes:
Step 1: Visit https://cbseacademic.nic.in/
Step 2: Click on the link titled “CBSE Sample Papers 2026”
Step 3: A PDF will open with links to Class 10 and 12 sample papers
Step 4: Select your class (Class 10 or Class 12)
Step 5: Choose your subject
Step 6: Download both the sample paper and its marking scheme
If you are looking for Class 10 previous year question papers for 2026 preparation, you can easily access them through the links I’ll be attaching. These papers are very helpful because they give you a clear idea about the exam pattern, marking scheme, and the type of questions usually asked in board exams. Practicing these will not only improve your time management but also help you identify important chapters and commonly repeated questions.
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers-class-10
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers
Hello,
Yes, you can give the CBSE board exam in 2027.
If your date of birth is 25.05.2013, then in 2027 you will be around 14 years old, which is the right age for Class 10 as per CBSE rules. So, there is no problem.
Hope it helps !
Here are some strategies so u can do best in your board exams and get god score
1. Make a good and smart schedule
2. If u r from cbse board go through ncert books by heart
3. Solve pyqs of each subject
4. Do revision on daily basis
5. Practice on presentation and writing the answer .
6. Do your best and give exam with the best way possible all the best blud .
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