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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.

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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.

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 BehaviourChemical reactions8 marks25 marks
Acids, bases, and salts5 marks
Metals and nonmetals7 marks
Carbon compounds5 marks
Unit 2: World of LivingLife processes8 marks25 marks
Control and co-ordination in animals and plants4 marks
Reproduction5 marks
Heredity and Evolution8 marks
Unit 3: Natural Phenomena Reflection and Refraction8 marks12 marks
The Human Eye and the Colourful World2 marks
Electricity2 marks
Unit 4: Effects of CurrentMagnetic Effects of Electric Current8 marks13 marks
Sources of Energy5 marks
Unit 5: Natural ResourcesEco-system, Environmental Problems
Biodegradable and Non-Biodegradable Substances
5 marks5 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 QuestionsNo. of QuestionsMarks
1 Mark16 questions16 × 1 = 20 marks
2 Marks6 questions6 × 2 = 12 marks
3 Marks7 questions7× 3 = 21 marks
4 Marks3 questions3 × 4 = 12 marks
5 Marks3 questions5 × 3 = 15 marks
Total35 questions80 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.

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 |

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