ICSE Class 10 Chapter Weightage 2026
Subject-wise Marks Distribution & Important Topics
Understand the chapter-wise weightage for ICSE Class 10 board exams. Focus on high-weightage topics to maximize your scores. Your complete guide to ICSE Class 10 chapter weightage.
Mathematics Chapter Weightage
| Unit / Chapter | Weightage (%) | Marks (Out of 80) | Importance |
|---|---|---|---|
| Commercial Mathematics (GST, Banking, Shares) | 16% | 13 | High |
| Algebra (Quadratic, Matrices, AP/GP, Factorisation) | 40% | 32 | High |
| Coordinate Geometry | 10% | 8 | Medium |
| Geometry (Circles, Similarity, Loci) | 10% | 8 | Medium |
| Mensuration | 10% | 8 | Medium |
| Trigonometry | 10% | 8 | Medium |
| Statistics | 10% | 8 | Medium |
| Probability | 4% | 3 | Low |
Note: Algebra has the highest weightage (32 marks), followed by Commercial Mathematics (13 marks). Focus on these topics for maximum scores.
Physics Chapter Weightage
| Unit / Chapter | Weightage (%) | Marks (Out of 80) | Importance |
|---|---|---|---|
| Mechanics (Motion, Force, Energy, Machines) | 35% | 28 | High |
| Light & Sound | 30% | 24 | High |
| Electricity & Magnetism | 20% | 16 | Medium |
| Modern Physics | 15% | 12 | Medium |
Chemistry Chapter Weightage
| Unit / Chapter | Weightage (%) | Marks (Out of 80) | Importance |
|---|---|---|---|
| Study of Compounds (HCl, NH3, HNO3, H2SO4) | 25% | 20 | High |
| Organic Chemistry | 18% | 15 | High |
| Mole Concept & Stoichiometry | 15% | 12 | High |
| Electrolysis | 12% | 10 | Medium |
| Metallurgy | 10% | 8 | Medium |
| Acids, Bases & Salts | 10% | 8 | Medium |
| Analytical Chemistry | 10% | 8 | Medium |
Note: Study of Compounds (20 marks) and Organic Chemistry (15 marks) have the highest weightage.
Biology Chapter Weightage
| Unit / Chapter | Weightage (%) | Marks (Out of 80) | Importance |
|---|---|---|---|
| Human Body Systems | 35% | 28 | High |
| Plant Physiology | 25% | 20 | High |
| Genetics | 20% | 16 | Medium |
| Ecology | 20% | 16 | Medium |
English Chapter Weightage
Paper 1: Language
| Section | Weightage (%) |
|---|---|
| Grammar | 35% |
| Comprehension | 30% |
| Writing Skills | 25% |
| Vocabulary | 10% |
Paper 2: Literature
| Section | Weightage (%) |
|---|---|
| Prose (Treasure Chest) | 40% |
| Poetry (Treasure Chest) | 35% |
| Drama (Julius Caesar) | 25% |
History & Civics Chapter Weightage
History
| Chapter | Weightage (%) |
|---|---|
| Indian National Movement (1857-1917) | 30% |
| Mass Phase (1915-1947) | 30% |
| The Contemporary World (World Wars, UN, NAM) | 20% |
| Rise of Dictatorships | 20% |
Civics
| Chapter | Weightage (%) |
|---|---|
| The Union Legislature | 35% |
| The Union Executive | 35% |
| The Judiciary | 30% |
Total Weightage: History (50%), Civics (50%)
Geography Chapter Weightage
Physical Geography
| Chapter | Weightage (%) |
|---|---|
| Climate of India | 25% |
| Map Work (Topographical Maps) | 20% |
| Rivers and Water Bodies | 15% |
| Soil and Vegetation | 10% |
Human Geography
| Chapter | Weightage (%) |
|---|---|
| Resources and Conservation | 15% |
| Map Work (India Map) | 10% |
| Agriculture | 10% |
| Industries | 10% |
| Population | 10% |
Total Weightage: Physical Geography (60%), Human Geography (40%)
Quick Reference: Subject-wise Weightage
| Subject | High Weightage Topics | Approx. Marks |
|---|---|---|
| Mathematics | Algebra (32 marks), Commercial Mathematics (13 marks) | 45/80 |
| Physics | Mechanics (28 marks), Light & Sound (24 marks) | 52/80 |
| Chemistry | Study of Compounds (20 marks), Organic Chemistry (15 marks) | 35/80 |
| Biology | Human Body Systems (28 marks), Plant Physiology (20 marks) | 48/80 |
| English | Grammar (35%), Prose (40%) | 55/80 |
| History & Civics | History: National Movement (60%), Civics: Union Legislature/Executive/Judiciary (100%) | 52/80 |
| Geography | Physical Geography (60%), Map Work (30%) | 72/80 |
Frequently Asked Questions
Chapter weightage helps you prioritize your study time. Focus more on high-weightage chapters to maximize your scores in board exams.
The weightage pattern is set by CISCE and is generally consistent across all ICSE schools. However, minor variations may exist. Always check with your school for the exact pattern.
StudyDecode provides comprehensive guidance for ICSE Class 10 students. We help you understand chapter weightage, plan your studies, and prepare effectively for board exams. Book a free consultation to know more.
Ready to Ace Your ICSE Class 10 Board Exams?
Get personalized guidance and exam preparation support for your ICSE Class 10 journey.
Book Free ConsultationOr email us at enquiry@studydecode.com