General Science — Study Notes for SSC CHSL

Overview

General Science contributes approximately 15–20 questions out of 100 in SSC CHSL Tier 1, making it a crucial scoring area. This section tests basic concepts from high school Physics, Chemistry and Biology—not advanced theory. Questions are typically factual ("What is the SI unit of force?") or application-based ("Which vitamin deficiency causes scurvy?").

Success requires memorizing fundamental definitions, units, processes and organ functions rather than deriving complex equations. The exam focuses on everyday science: how things work, what causes what, and standard classifications. Most questions can be answered in 10–15 seconds if you have the factual base locked in. Candidates who neglect this section lose easy marks, while those who systematically cover all three branches gain a decisive edge.

Your strategy: build a strong foundation in Physics laws and units, Chemistry's periodic trends and reactions, and Biology's human body systems. Prioritize high-frequency topics like vitamins, diseases, simple machines, acids-bases, and cell structure. Revise using flashcards for quick recall on exam day.