Science Simplified for UPSC 2026: Easy Science Guide for Non-Science Background Aspirants

Why Science Matters in UPSC: Easy, scoring, concept-based. 70% questions come from basics + daily life.

Physics Made Easy: No formulas needed. Focus on real-life logic → force, friction, energy, light, electricity.

High-Yield Physics Topics: Refraction, reflection, lenses, AC vs DC, power generation, satellites.

Chemistry Made Simple: Chemistry = everyday life. Acids, bases, salts, air & water chemistry, pollution, metals.

High-Yield Chemistry Topics: pH of soil, acid rain, ozone depletion, green chemistry, corrosion.

Biology = Most Scoring: Cell basics, human body systems, hormones, immunity, vaccines.

Ecology = Must-Do: Biodiversity, food chain, climate change, protected areas, hotspots.

Science & Tech (S&T): ISRO missions, NavIC, 5G, AI, biotechnology, space & defence tech.

Minimal Booklist: NCERT 6–12 Science (selective), NCERT 12 Biology (Physiology), NCERT 11 Ecology chapters, S&T current affairs

Study Strategy: Understand -> Visualize -> Apply -> Revise. Solve PYQs regularly.

Pro Tip: Science is NOT technical for UPSC. It’s simple reasoning + daily examples.