Module 2 · CDS General Knowledge

General Science

Basics of physics, chemistry, biology, human physiology, environment.

Physics · Chemistry · Biology · Human Body · Environment

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Learning Objectives

Understand the fundamental concepts of General Science
Apply key formulas and techniques to solve problems
Practice with exam-level questions to build speed and accuracy

Key Concepts

General Science for SSC GD & Agniveer

General science covers basic concepts from physics, chemistry, and biology. For SSC GD and Agniveer, questions are at the high school level covering everyday science phenomena and important scientific facts.

Key Concepts

Physics: Newton's Laws (inertia, F=ma, action-reaction). Gravitation (g=9.8 m/s²). Work, Energy, Power. Light (reflection, refraction, lenses, mirrors). Sound (speed 340 m/s, echo). Electricity (Ohm's Law V=IR, current, circuits). Chemistry: Atomic structure (proton, neutron, electron). Elements, Compounds, Mixtures. Acids (pH<7) and Bases (pH>7). Common compounds (NaCl, H₂O, CO₂). Periodic Table trends. Oxidation-Reduction. Biology: Cell (structure, organelles). Human body systems (digestive, respiratory, circulatory, nervous). Vitamins (A-K, sources, deficiencies). Diseases (causes, prevention). Plants (photosynthesis, transpiration).

Solved Examples

Example 1

What is the SI unit of electric current?

a) Volt b) Ampere c) Ohm d) Watt

Solution: b) Ampere (A). Current = charge/time. 1 A = 1 C/s.

Practice Questions

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