CBSE Class 10 Science Chapter-wise Important Questions 2027
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Every chapter of Science with its previous-year questions and the questions that repeat — from 5 board + 2 official sample papers (2022–2026). Pick a chapter.
| # | Chapter | Past questions | Repeated |
|---|---|---|---|
| 1 | Chemical Reactions and Equations Chemical Substances - Nature and Behaviour | 22 | 6 |
| 2 | Acids, Bases and Salts Chemical Substances - Nature and Behaviour | 33 | 6 |
| 3 | Metals and Non-metals Chemical Substances - Nature and Behaviour | 33 | 7 |
| 4 | Carbon and its Compounds Chemical Substances - Nature and Behaviour | 21 | 5 |
| 5 | Life Processes World of Living | 41 | 9 |
| 6 | Control and Coordination World of Living | 23 | 6 |
| 7 | How do Organisms Reproduce World of Living | 21 | 5 |
| 8 | Heredity World of Living | 27 | 6 |
| 9 | Light - Reflection and Refraction Natural Phenomena | 35 | 8 |
| 10 | The Human Eye and the Colourful World Natural Phenomena | 14 | 6 |
| 11 | Electricity Effects of Current | 29 | 9 |
| 12 | Magnetic Effects of Electric Current Effects of Current | 23 | 6 |
| 13 | Our Environment Natural Resources | 25 | 8 |