Railways Notes / General Science
RRB NTPC · Group D Preparation

General Science
Notes for RRB

Physics, Chemistry, and Biology — the complete General Science syllabus for RRB NTPC & Group D, with formulas, key facts, and quick-reference tables. No PDF, no signup required.

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8 ChaptersFull topic coverage
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Tap a chapter to start reading. Each opens its own dedicated notes page with facts, tables, and solved examples.

1
Physics — Motion, Force & Energy
Uniform Motion:Equal distance in equal time intervals (constant speed)
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2
Physics — Light, Sound & Heat
Speed of light = 3 × 10⁸ m/s (in vacuum)
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3
Physics — Electricity & Magnetism
Current (I):Rate of flow of charge. I = Q/t | Unit: Ampere (A)
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4
Chemistry — Acids, Bases & Chemical Reactions
pH < 7 | Sour taste | Turns blue litmus RED | Proton donors
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5
Chemistry — Matter, Elements & Periodic Table
Solid → Liquid:Melting(heat absorbed) | Liquid → Solid:Freezing
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6
Biology — Human Body Systems
Heart has 4 chambers: 2 Atria (upper) + 2 Ventricles (lower)
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7
Biology — Vitamins, Nutrition & Diseases
A — Retinol — Carrot, milk, liver, egg yolk — Night blindness, Xerophthalmia
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8
Biology — Plants, Ecology & Environment
Process: 6CO₂ + 6H₂O + Light energy → C₆H₁₂O₆ (glucose) + 6O₂
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