In RRB Group D, the Science section carries 25 questions (25 marks) — and **100% of them come from NCERT Class 6 to 10**. You don’t need coaching or extra books. Just **focus on the right chapters**.
Based on analysis of 2018–2024 RRB Group D papers, here are the must-read NCERT chapters — organized by subject and class.
🔬 Physics (8–10 Questions)
Class 6
- Ch 10 Motion and Measurement of Distances
- Ch 11 Light, Shadows and Reflections
- Ch 12 Electricity and Circuits
Class 7
- Ch 4 Heat
- Ch 13 Motion and Time
- Ch 14 Electric Current and Its Effects
- Ch 15 Light
Class 8
- Ch 2 Force and Pressure
- Ch 4 Materials: Metals and Non-Metals
- Ch 11 Force and Pressure
- Ch 12 Friction
- Ch 13 Sound
- Ch 14 Chemical Effects of Electric Current
- Ch 15 Some Natural Phenomena
- Ch 16 Light
Class 9 & 10
- 9-Ch 8 Motion
- 9-Ch 9 Force and Laws of Motion
- 9-Ch 10 Gravitation
- 9-Ch 11 Work and Energy
- 9-Ch 12 Sound
- 10-Ch 10 Light – Reflection and Refraction
- 10-Ch 11 Human Eye and Colorful World
- 10-Ch 12 Electricity
- 10-Ch 13 Magnetic Effects of Electric Current
🧪 Chemistry (6–8 Questions)
Class 6
- Ch 4 Sorting Materials into Groups
- Ch 5 Separation of Substances
Class 7
- Ch 5 Acids, Bases and Salts
- Ch 6 Physical and Chemical Changes
Class 8
- Ch 3 Synthetic Fibres and Plastics
- Ch 4 Materials: Metals and Non-Metals
- Ch 5 Coal and Petroleum
- Ch 6 Combustion and Flame
Class 9 & 10
- 9-Ch 1 Matter in Our Surroundings
- 9-Ch 2 Is Matter Around Us Pure?
- 9-Ch 3 Atoms and Molecules
- 9-Ch 4 Structure of the Atom
- 10-Ch 1 Chemical Reactions and Equations
- 10-Ch 2 Acids, Bases and Salts
- 10-Ch 3 Metals and Non-Metals
- 10-Ch 4 Carbon and Its Compounds
🧬 Biology (7–9 Questions)
Class 6
- Ch 7 Getting to Know Plants
- Ch 9 The Living Organisms — Characteristics and Habitats
Class 7
- Ch 1 Nutrition in Plants
- Ch 2 Nutrition in Animals
- Ch 10 Respiration in Organisms
- Ch 11 Transportation in Animals and Plants
- Ch 12 Reproduction in Plants
Class 8
- Ch 8 Cell – Structure and Functions
- Ch 9 Reproduction in Animals
- Ch 10 Reaching the Age of Adolescence
Class 9 & 10
- 9-Ch 5 The Fundamental Unit of Life
- 9-Ch 6 Tissues
- 9-Ch 7 Diversity in Living Organisms
- 10-Ch 6 Life Processes
- 10-Ch 7 Control and Coordination
- 10-Ch 8 How do Organisms Reproduce?
- 10-Ch 9 Heredity and Evolution
- 10-Ch 15 Our Environment
- 10-Ch 16 Sustainable Management of Natural Resources
🎯 Preparation Strategy
- Read one chapter daily — 30 days = full syllabus
- Make 3-column notes: Term | Definition | Example
- Solve 10 MCQs per chapter — test your understanding
- Revise diagrams — Human eye, Electric circuit, Plant cell
📚 Related Reading
Practice RRB Group D Science MCQs daily — auto-generated from NCERT topics!
→ Practice RRB Science MCQsNote: In 2024 RRB Group D, 22 out of 25 Science questions were directly from these chapters. Stick to NCERT — it’s enough!