NCERT Solutions for Class 10 Science cover all 13 chapters of the rationalised CBSE textbook. Each chapter page gives you worked solutions for every intext and exercise question, with units, formula steps, and the specific errors examiners flag most.
Whether you are stuck on a numerical in Electricity or need to check a balanced equation in Chemical Reactions, this hub routes you to the right chapter in seconds. Use the directory below to find your chapter, then open its solutions page for step-by-step answers.
NCERT Solutions for Class 10 Science — Chapter Directory
The current NCERT Class 10 Science textbook has 13 chapters after rationalisation. The directory below lists every chapter; each row links to its solutions page.
Here is what each chapter’s solutions cover:
| Ch | Chapter notes | Key topics covered |
|---|---|---|
| 1 | Chemical Reactions and Equations | (intro — opening paragraphs; no heading rendered) · Reaction-type and redox statement questions (Exercise Q1-Q3) · Balancing equations: definition, translation and practice (Exercise Q4-Q6) |
| 2 | Acids, Bases and Salts | NCERT Solutions for Class 10 Science Chapter 2: identifying acids, bases and neutral water with red litmus (Page 18, Question 1) · Intext solutions: acids reacting with metals and metal carbonates (Page 22, Questions 1-3) · Intext solutions: why acids need water — ions and electrical conductivity (Page 25, Questions 1-3) |
| 3 | Metals and Non-metals | Metals and Non-metals: What This Chapter Covers · Key Concepts You Need Before the Solutions · Intext Questions: Physical Properties of Metals (Page 4) |
| 4 | Carbon and its Compounds | Covalent Bonding and Electron Dot Structures (Intext p.61) · Isomers, Nomenclature and Carbon Skeletons (Intext p.68) · Oxidation, Combustion and Ethyne Reactions (Intext p.71) |
| 5 | Life Processes | Life Processes: what this chapter covers and how to use this page · Intext Solutions — 5.1 What are Life Processes? (Page 80–81, Q1–Q4) · Important Concepts for Nutrition Questions — autotrophic, heterotrophic, enzymes, villi |
| 6 | Control and Coordination | Intro · Table of Contents · Nervous System Intext Solutions (page 6) |
| 7 | How do Organisms Reproduce? | Intro · DNA Copying and Variation (Intext Questions, Page 114) · Asexual Reproduction Modes (Intext Questions, Page 118) |
| 8 | Heredity | Intro paragraph (no heading) · Variation, Inheritance and Mendel's Laws — Intext Questions (Page 131) · Mendel's Experiments, Trait Expression and Sex Determination — Intext Questions (Page 132) |
| 9 | Light – Reflection and Refraction | Intro (no heading tag on page) · Key definitions and formulas: the mirror and lens toolkit · How to solve mirror and lens numericals step by step |
| 10 | The Human Eye and the Colourful World | Intro: What This Page Gives You · On-page Table of Contents · Intext Questions Solutions ( páginas 164) |
| 11 | Electricity | intro · Electric current and the ampere (Q1–Q3, page 2) · Potential difference and the volt (Q1–Q3, page 4) |
| 12 | Magnetic Effects of Electric Current | (Opening prose — no heading on the page) · Magnetic field and field lines: why a compass turns and why two lines never cross · Fields around a straight wire, a circular loop and a solenoid: patterns and the right hand thumb rule |
| 13 | Our Environment | What These Chapter 13 Solutions Cover · Key Concepts Before the Solutions · Intext Solutions: Trophic Levels and the Role of Decomposers (p. 5) |
- Chapter 1 — Chemical Reactions and Equations: Balancing equations, identifying reaction types (combination, decomposition, displacement, redox), and writing balanced equations from word problems.
- Chapter 2 — Acids, Bases and Salts: pH scale calculations, acid-base reactions, salt preparation, and the chemistry of chlor-alkali and plaster of Paris.
- Chapter 3 — Metals and Non-metals: Reactivity series, extraction of metals, corrosion, and distinguishing properties of metals versus non-metals.
- Chapter 4 — Carbon and its Compounds: Carbon bonding (saturated and unsaturated), functional groups, isomers, soaps versus detergents, and basic IUPAC naming.
- Chapter 5 — Life Processes: Nutrition (autotrophic and heterotrophic), respiration, transportation, and excretion with labelled diagrams.
- Chapter 6 — Control and Coordination: Nervous system reflex arc, plant hormones, and the difference between nervous and hormonal control.
- Chapter 7 — How do Organisms Reproduce?: Modes of reproduction (asexual and sexual), reproductive health, and contraception methods.
- Chapter 8 — Heredity: Mendel’s laws, sex determination, and monohybrid cross reasoning.
- Chapter 9 — Light – Reflection and Refraction: Mirror and lens formula calculations, sign convention, ray diagrams, and refraction through prisms.
- Chapter 10 — The Human Eye and the Colourful World: Eye defects (myopia, hypermetropia, presbyopia), lens power calculations, and dispersion.
- Chapter 11 — Electricity: Ohm’s law, series and parallel circuits, electric power and energy, and heating effect calculations.
- Chapter 12 — Magnetic Effects of Electric Current: Magnetic field patterns, electromagnetic induction, domestic circuits, and AC versus DC.
- Chapter 13 — Our Environment: Food chains, trophic levels, ozone depletion, and waste management.
How to Use These Class 10 Science Solutions
The most common mistake students make with solutions is copying them without attempting the question first. This builds no understanding and fails in the exam because the question wording changes. The correct method is simple:
- Solve the NCERT question yourself on paper before opening the solution. Even a partial attempt shows you where you are stuck.
- Compare your steps, not just the final answer. A correct answer with wrong steps earns fewer marks than you think.
- For numerical chapters (9, 10, 11, 12), check unit conversions and sign conventions carefully. A wrong sign in the lens formula or a missed unit conversion in Ohm’s law calculations can cost the full question — these are the specific areas where students lose marks.
- Before the board exam, re-solve any question you got wrong the first time. Time yourself on numerical chapters to build speed.
You can also find the full set of Class 10 NCERT Solutions across all subjects to plan your revision.
What Each Chapter’s Solutions Include
Each chapter page gives you worked steps for every intext and exercise question, with units and formula derivations where needed. The 13 chapters of Class 10 Science span four subject areas. Use this mapping to find chapters by discipline:
| Subject Area | Chapters | What the Solutions Emphasise |
|---|---|---|
| Chemistry | 1, 2, 3, 4 | Balancing equations, pH calculations, reactivity series, functional groups, IUPAC naming |
| Biology | 5, 6, 7, 8 | Life process diagrams, reflex arc labelling, reproductive biology, Mendelian cross reasoning |
| Physics | 9, 10, 11, 12 | Mirror and lens formula working, Ohm’s law calculations, circuit analysis, magnetic field diagrams |
| Environment | 13 | Food chains, trophic levels, ozone depletion, waste management |
In the CBSE Class 10 Science board paper (80 marks), the three science disciplines carry roughly equal weight — approximately 25–27 marks each. Skipping any one group costs heavily, so balance your revision across Chemistry, Biology, and Physics.
The current NCERT Class 10 Science book has 13 chapters after rationalisation. Older editions included additional chapters like Sources of Energy and Management of Natural Resources, which are no longer part of the rationalised syllabus. You can verify the current textbook contents on the official NCERT textbook page.
Frequently Asked Questions
How many chapters are in the Class 10 Science NCERT textbook now?
The current NCERT Class 10 Science textbook has 13 chapters after rationalisation. The book covers Chemistry (Chapters 1–4), Biology (Chapters 5–8), Physics (Chapters 9–12), and Environment (Chapter 13).
Which chapters were removed from Class 10 Science after rationalisation?
Chapters like Sources of Energy and Management of Natural Resources were removed during rationalisation. The current book ends at Chapter 13, Our Environment. Some content within remaining chapters was also trimmed.
Are NCERT solutions enough for the CBSE Class 10 Science board exam?
NCERT is the core — board questions follow NCERT patterns. To score well, also practise previous year papers and sample papers. NCERT solutions build your conceptual base; timed practice builds your exam speed.
How do I find a specific question’s solution on this page?
Open the chapter page from the directory above. Each chapter page lists solutions by exercise number (1.1, 1.2, etc.) and has an in-page table of contents so you can jump to the question you need.
Reference: NCERT textbooks (CBSE).