CBSE Class 10 Science Important Questions
CBSE Class 10 Science is dense — three subjects, one paper, and marks split across definitions, diagrams, reasoning and numericals. These important questions are picked to cover all four question types, so nothing on exam day is unfamiliar. Chapter-wise, with model answers, aligned to the NCERT 2026–27 syllabus.
- 13
- Chapters
- 13
- Live now
- 80
- Theory marks
- ₹0
- Free forever
CBSE Class 10 Science important questions are chapter-wise practice questions on the core ideas of the CBSE Class 10 Science syllabus, in the question formats used in the exam. Classmate AI gives all 13 chapters free, each with a model answer. Pick a chapter below to start.
All 13 chapters — Class 10 Science
In syllabus order. Open any chapter for its free important questions with model answers.
| Chapter | CBSE Class 10 Science — Important Questions by chapter |
|---|---|
| Chapter 1 | Chemical Reactions and Equations |
| Chapter 2 | Acids, Bases and Salts |
| Chapter 3 | Metals and Non-metals |
| Chapter 4 | Carbon and its Compounds |
| Chapter 5 | Life Processes |
| Chapter 6 | Control and Coordination |
| Chapter 7 | How do Organisms Reproduce? |
| Chapter 8 | Heredity |
| Chapter 9 | Light: Reflection and Refraction |
| Chapter 10 | The Human Eye and the Colourful World |
| Chapter 11 | Electricity |
| Chapter 12 | Magnetic Effects of Electric Current |
| Chapter 13 | Our Environment |
CBSE Class 10 Science marks weightage
Theory is 80 marks (+20 internal). Spend the most time where the marks are — our important questions are weighted the same way.
| Unit | Marks |
|---|---|
| Chemical Substances — Nature & Behaviour | 25 |
| World of Living | 25 |
| Natural Phenomena (Light) | 12 |
| Effects of Current | 13 |
| Natural Resources | 5 |
| Theory total | 80 |
Why these Science questions help
- Precise definitions and neat, labelled diagrams carry easy, reliable marks.
- Reasoning and assertion–reason questions reward understanding, not rote learning.
- Numericals in Physics need practice under time — these build that speed.
Class 10 Science exam tips
- Practise labelled diagrams until you can draw them from memory.
- Write definitions in the exact keywords the marking scheme expects.
- For numericals, always write the formula, units and final answer clearly.
- When a chapter still will not click, let the Classmate AI tutor walk you through it step by step.
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Frequently asked questions
Are CBSE Class 10 Science important questions free?
Yes. Every chapter's important-questions page for CBSE Class 10 Science is completely free — no login, no payment.How many chapters are covered in Class 10 Science?
All 13 chapters of the CBSE Class 10 Science syllabus have their own important-questions page.Do these follow the latest CBSE Class 10 Science syllabus?
Yes — every chapter is mapped to the NCERT 2026–27 syllabus for CBSE Class 10 Science, so nothing is outdated or dropped.What is the marks weightage for Class 10 Science?
Class 10 Science carries 80 theory marks + 20 internal. Chemistry and Biology (25 marks each) carry the most, so prioritise them.How should I use these Science important questions?
Finish each chapter from your textbook, attempt its important questions on paper, then check the model answers and re-do anything you got wrong.What should I focus on for CBSE Class 10 Science important questions overall?
Life Processes, Control and Coordination and How do Organisms Reproduce (the biology unit) together carry the same weightage as all of Physics and Chemistry combined in the CBSE Class 10 Science board exam, so biology is worth prioritising. Chemical Reactions and Equations, Acids/Bases/Salts and Electricity are the next-highest-yield chapters — pick a chapter from the list on this page to start.
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