Bihar Board Class 11 Science Chapter Weightage 2026-27
Complete Chapter-wise Marks Distribution for Science Stream
Understand the weightage of each chapter to strategize your exam preparation.
Focus on high-weightage chapters for maximum marks and efficient preparation.
Bihar Board Class 11 Science Weightage Overview 2026-27
4
Core Science Subjects
12-16
Chapters per Subject
70-80%
Theory Weightage
20-30%
Practical Weightage
Subject-wise Weightage Distribution 2026-27
| Subject | Total Marks | Theory Marks | Practical Marks | Internal Marks |
|---|---|---|---|---|
| Physics | 100 | 70 | 20 | 10 |
| Chemistry | 100 | 70 | 20 | 10 |
| Biology | 100 | 70 | 20 | 10 |
| Mathematics | 100 | 80 | - | 20 |
| English | 100 | 80 | - | 20 |
| Hindi | 100 | 80 | - | 20 |
Note: Mathematics has no practical component. Biology, Physics, and Chemistry include practical examinations.
Important Chapters with High Weightage
Physics Weightage Core Subject
High Weightage Topics
- Laws of Motion - 15%
- Work, Energy, and Power - 12%
- Rotational Motion - 10%
- Ray Optics - 12%
- Thermodynamics - 10%
Medium Weightage Topics
- Electric Charges and Fields - 8%
- Current Electricity - 8%
- Wave Optics - 8%
- Modern Physics - 10%
- Gravitation - 7%
Chemistry Weightage Core Subject
High Weightage Topics
- Chemical Bonding - 15%
- Hydrocarbons (Organic) - 15%
- Atomic Structure - 12%
- Thermodynamics - 10%
- s-block Elements - 8%
Medium Weightage Topics
- States of Matter - 8%
- p-block Elements - 8%
- Functional Groups - 10%
- Redox Reactions - 7%
- Environmental Chemistry - 7%
Biology Weightage Elective Subject
High Weightage Topics
- Cell Structure and Function - 15%
- Photosynthesis - 12%
- Plant Growth and Hormones - 10%
- Genetics - 10%
- Ecosystems - 10%
Medium Weightage Topics
- Biomolecules - 8%
- Respiration - 8%
- Animal Tissues - 8%
- Excretion - 7%
- Environmental Issues - 7%
Mathematics Weightage Elective Subject
High Weightage Topics
- Limits and Derivatives - 18%
- Trigonometric Functions - 15%
- Coordinate Geometry - 15%
- Complex Numbers - 12%
- Sequences and Series - 10%
Medium Weightage Topics
- Sets, Relations, and Functions - 8%
- Conic Sections - 8%
- Probability - 7%
- Statistics - 7%
Strategy for Maximum Marks Using Weightage
High Weightage First
Focus on chapters with 15%+ weightage first
Practice Regularly
Solve more questions from high-weightage topics
Revision Plan
Revise high-weightage chapters multiple times
Mock Tests
Take tests focusing on high-weightage topics
Frequently Asked Questions
- Prioritize Topics: Focus more on chapters with higher weightage
- Plan Study Schedule: Allocate time based on importance
- Maximize Scores: Target high-weightage chapters for better results
- Core Topics: Always have higher weightage
- Annual Updates: Any significant changes are announced by BSEB
- Check Official Sources: Always refer to the latest BSEB syllabus for updates
- Detailed Analysis: Subject-wise and chapter-wise weightage breakdown
- Priority Planning: Help with prioritizing based on weightage
- Study Strategies: Tips for maximum marks with minimal effort
- Expert Guidance: Personalized plans based on weightage patterns
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