In short: The CBSE Class 10 syllabus for 2026-27 follows the rationalized NCERT curriculum. Some topics have been removed or moved to internal assessment. This guide lists every chapter included in the 2027 board exam for Maths, Science, Social Science, English, and Hindi — along with deleted topics you can safely skip and the marks each unit carries.
Where to Find the Official Syllabus
The official CBSE Class 10 syllabus for 2026-27 is available at cbseacademic.nic.in/curriculum_2027.html. Always cross-check with the official document. This guide summarizes and explains it.
Mathematics Syllabus 2027 (80 Marks Theory)
Unit-Wise Distribution
| Unit | Marks |
|---|---|
| Number Systems | 6 |
| Algebra | 20 |
| Coordinate Geometry | 6 |
| Geometry | 15 |
| Trigonometry | 12 |
| Mensuration | 10 |
| Statistics and Probability | 11 |
| Total | 80 |
Chapters Included
- Real Numbers — Euclid's division algorithm, Fundamental Theorem of Arithmetic, irrationality proofs, decimal expansions.
- Polynomials — Zeros of a polynomial, relationship between zeros and coefficients.
- Pair of Linear Equations in Two Variables — Graphical method, algebraic methods (substitution, elimination, cross-multiplication).
- Quadratic Equations — Standard form, solution by factorisation and quadratic formula, nature of roots.
- Arithmetic Progressions — nth term, sum of first n terms, word problems.
- Triangles — Similarity criteria (AA, SAS, SSS), Basic Proportionality Theorem, areas of similar triangles.
- Coordinate Geometry — Distance formula, section formula, area of triangle.
- Introduction to Trigonometry — Trigonometric ratios, ratios of complementary angles, identities.
- Some Applications of Trigonometry — Heights and distances.
- Circles — Tangent to a circle, theorems on tangents.
- Areas Related to Circles — Area of sector and segment, area of combinations.
- Surface Areas and Volumes — Combinations of solids, conversion of shapes, frustum.
- Statistics — Mean, median, mode of grouped data, ogives.
- Probability — Classical definition, simple problems.
Deleted / Moved to Internal Assessment
- Constructions chapter (dividing a line segment, constructing tangents) — moved to internal assessment/project.
- Some exercises from Chapter 1 (Real Numbers) have been trimmed.
For the complete marks breakdown chapter-by-chapter, see the CBSE Class 10 Maths marks weightage guide. For formulas, see the complete formulas list.
Science Syllabus 2027 (80 Marks Theory + 20 Internal)
Unit-Wise Distribution
| Unit | Marks |
|---|---|
| Chemical Substances — Nature and Behaviour | 25 |
| World of Living | 25 |
| Natural Phenomena | 12 |
| Effects of Current | 13 |
| Natural Resources | 5 |
| Total | 80 |
Chapters Included
- Chemical Reactions and Equations — Types of reactions, balancing, corrosion, rancidity.
- Acids, Bases and Salts — Properties, pH scale, salts preparation.
- Metals and Non-Metals — Reactivity series, extraction, ionic compounds.
- Carbon and Its Compounds — Covalent bonding, homologous series, nomenclature, ethanol, ethanoic acid.
- Life Processes — Nutrition, respiration, transportation, excretion in plants and animals.
- Control and Coordination — Nervous system, hormones, reflex action. (Note: some parts may be in internal assessment — check the official circular.)
- How Do Organisms Reproduce — Asexual and sexual reproduction.
- Heredity and Evolution — Mendel's laws, sex determination, evolution.
- Light — Reflection and Refraction — Mirror formula, lens formula, ray diagrams.
- Human Eye and the Colourful World — Defects of vision, dispersion, scattering.
- Electricity — Ohm's law, resistance, power, energy.
- Magnetic Effects of Electric Current — Fleming's rules, motor, generator.
- Our Environment — Ecosystem, food chains, ozone depletion.
Deleted / Moved
- Periodic Classification of Elements — deleted from the theory exam in recent years.
- Management of Natural Resources — moved to internal assessment/project.
- Sources of Energy — deleted from the board exam syllabus.
Always verify against the latest CBSE circular. The Science marks weightage guide has the detailed chapter-wise breakdown.
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Social Science Syllabus 2027 (80 Marks Theory + 20 Internal)
Unit-Wise Distribution
| Section | Marks |
|---|---|
| History (India and the Contemporary World II) | 20 |
| Geography (Contemporary India II) | 20 |
| Political Science (Democratic Politics II) | 20 |
| Economics (Understanding Economic Development) | 20 |
| Total | 80 |
Chapters Included
History: Rise of Nationalism in Europe, Nationalism in India, The Making of a Global World, The Age of Industrialisation, Print Culture and the Modern World.
Geography: Resources and Development, Water Resources, Agriculture, Minerals and Energy Resources, Manufacturing Industries, Lifelines of National Economy. (Forest and Wildlife Resources — check if in internal assessment.)
Political Science: Power Sharing, Federalism, Democracy and Diversity, Gender Religion and Caste, Political Parties, Outcomes of Democracy.
Economics: Development, Sectors of the Indian Economy, Money and Credit, Globalisation and the Indian Economy, Consumer Rights.
See the Social Science marks weightage guide for chapter-wise marks.
English Syllabus 2027 (80 Marks Theory + 20 Internal)
| Section | Marks |
|---|---|
| Reading Comprehension | 20 |
| Writing Skills | 20 |
| Grammar | 10 |
| Literature | 30 |
| Total | 80 |
Textbooks: First Flight (prose and poetry) and Footprints without Feet (supplementary reader).
Hindi Syllabus 2027
Hindi Course A and Course B both follow the revised syllabus with Kshitij, Kritika (for Course A) or Sparsh, Sanchayan (for Course B) as prescribed textbooks.
How to Use the Syllabus Strategically
- Mark the deleted topics. Do not waste time studying chapters that are not in the exam.
- Cross-reference with the marks weightage. High-weightage units deserve more study time. Use the weightage guides linked above.
- Follow the NCERT textbook chapter order. CBSE questions come from NCERT. If a topic is in NCERT but not in the syllabus, skip it.
- Check the latest CBSE circular. Syllabus rationalization can change slightly each year. The official document at cbseacademic.nic.in is the final authority.
Frequently Asked Questions
Is the CBSE Class 10 syllabus reduced for 2027?
The syllabus has been rationalized over the past few years as part of NEP 2020 implementation. Some chapters (Periodic Classification, Management of Natural Resources, Sources of Energy) have been removed from the theory exam. The remaining syllabus is what appears on the board paper.
Where can I download the official CBSE syllabus PDF?
Go to cbseacademic.nic.in and navigate to "Curriculum 2026-27." Subject-wise PDFs are available for download.
Are deleted chapters asked in the board exam?
No. If a chapter is listed as deleted or moved to internal assessment in the official syllabus circular, it will not appear on the theory paper. However, it may be part of your internal assessment or practical work.
Has the paper pattern changed along with the syllabus?
No. The 5-section, 80-mark paper pattern (MCQs, Short Answers, Long Answers, Case-Based) remains unchanged for 2027.
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