CBSE Class 10 Science Weightage 2025: Unit and chapter-wise marks distribution
The chapter-wise CBSE Class 10 Science Weightage 2025 is detailed here along with the blueprint of the paper. The marks distribution for units is official while for chapters, it is unofficial as per previous papers.
CBSE Class 10 Science Weightage 2025: The Central Board of Secondary Education (CBSE) has released comprehensive subject-wise syllabi and detailed marks distribution for the CBSE Class 10 Examination scheduled for AY 2024-25. Based on the same, a detailed breakdown of marks distribution weightage for the theory examinaiton of CBSE Class 10 Science 2025 is provided here. Along with it, the blueprint of the paper is also provided. Additionally, the official CBSE documentation includes a breakdown of internal assessment criteria, outlining how the 20 marks for this component are distributed. This meticulous detail is vital for students to understand how their performance throughout the academic year will influence their overall examination results.
Also Read | CBSE Class 10 Date Sheet 2025 Released
CBSE Class 10 Science Weightage 2025
As per the Science course structure of Class 10 for the academic year 2024-2025, we have provided chapter-wise weightage for a total of 5 units for easy understanding in the tabular format below.
| Unit | Chapter Name | Weightage | Total Weightage |
| Unit 1: Chemical Substances-Nature and Behaviour | Chemical reactions | 8 marks | 25 marks |
| Acids, bases, and salts | 5 marks | ||
| Metals and nonmetals | 7 marks | ||
| Carbon compounds | 5 marks | ||
| Unit 2: World of Living | Life processes | 8 marks | 25 marks |
| Control and co-ordination in animals and plants | 4 marks | ||
| Reproduction | 5 marks | ||
| Heredity and Evolution | 8 marks | ||
| Unit 3: Natural Phenomena | Reflection and Refraction | 8 marks | 12 marks |
| The Human Eye and the Colourful World | 2 marks | ||
| Electricity | 2 marks | ||
| Unit 4: Effects of Current | Magnetic Effects of Electric Current | 8 marks | 13 marks |
| Sources of Energy | 5 marks | ||
| Unit 5: Natural Resources | Eco-system, Environmental Problems Biodegradable and Non-Biodegradable Substances | 5 marks | 5 marks |
CBSE Class 10 Science Blueprint 2025
Check out the marks distribution for CBSE Class 10 Science 2024-25 here in the following table-
| Type of Questions | No. of Questions | Marks |
| 1 Mark | 16 questions | 16 × 1 = 20 marks |
| 2 Marks | 6 questions | 6 × 2 = 12 marks |
| 3 Marks | 7 questions | 7× 3 = 21 marks |
| 4 Marks | 3 questions | 3 × 4 = 12 marks |
| 5 Marks | 3 questions | 5 × 3 = 15 marks |
| Total | 35 questions | 80 marks |
| Internal assessment | - | 20 marks |
CBSE Class 10 Science 2024 Model Paper
Candidates can find the sample question paper and marking scheme PDF links for CBSE Class 10 Science 2024 examination below.
| Particulars | Details |
| Sample Question Paper | CBSE Class 10 Science Sample Question Paper 2024 |
| Marking Scheme | CBSE Class 10 Marking Scheme 2024 |
For the Class 10 Science exam, there will be a total of 100 marks available. Out of these, 80 marks are dedicated to the theoretical examination, while the remaining 20 marks are reserved for internal assessment components. The theoretical exam will test students through a variety of question formats, including simple and complex multiple-choice questions (MCQs), short answer type questions, long answer type questions, as well as case-based questions. This diversity in question types aims to assess students' understanding of scientific concepts and their ability to apply them in different contexts.
CBSE Class 10 Subject-Wise Weightage 2025 |
| Subjects | Link |
| Social Science | CBSE Class 10 Social Science Weightage 2025 |
| Mathematics | CBSE Class 10 Mathematics Weightage 2025 |
| English | CBSE Class 10 English Weightage 2025 |
| Hindi Course B | CBSE Class 10 Hindi Course B Weightage 2025 |
| Hindi Course A | CBSE Class 10 Hindi Course A Weightage 2025 |
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