General Science is one of the most scoring GK topics across SSC CGL, Railway NTPC and Group D. With factual, predictable questions from Physics, Chemistry and Biology, consistent practice of PYQs guarantees marks.
📊 Science Weightage: SSC CGL: 4–6 questions · Railway NTPC: 5–8 questions · Group D: 8–10 questions · Biology has highest repeat rate across all exams
🔑 Most Important Science Topics
Biology — human body systems, diseases, vitamins, blood groups, cells
Physics — laws of motion, light, sound, electricity, units and measurements
Chemistry — acids and bases, elements and compounds, metals and nonmetals, common chemicals
Nutrition — deficiency diseases, vitamins and minerals
Inventions — who invented what (thermometer, telephone, DNA structure)
📝 Sample Science PYQ Questions
Q1. Which vitamin is produced by the human body when exposed to sunlight?
A) Vitamin AB) Vitamin B12C) Vitamin CD) Vitamin D
✅ Answer: D) Vitamin D — Vitamin D (Calciferol) is synthesized in the skin when exposed to ultraviolet rays from sunlight. Its deficiency causes Rickets.
Q2. Which gas is used in fire extinguishers?
A) OxygenB) NitrogenC) Carbon DioxideD) Hydrogen
✅ Answer: C) Carbon Dioxide — CO₂ is used in fire extinguishers because it is heavier than air and does not support combustion, cutting off oxygen supply to the fire.
Q3. What is the SI unit of electric current?
A) VoltB) WattC) AmpereD) Ohm
✅ Answer: C) Ampere — The SI unit of electric current is Ampere (A), named after French physicist André-Marie Ampère.
Q4. Which part of the human eye controls the amount of light entering it?
A) CorneaB) RetinaC) IrisD) Lens
✅ Answer: C) Iris — The iris is the coloured part of the eye that controls the diameter of the pupil, regulating the amount of light entering the eye.
Practice 200+ Science PYQs Free
Filter by your exam + Science topic and practice all questions with instant explanations.
Which science topics are most important for SSC CGL?
Biology (human body, vitamins, diseases) has the highest repeat rate in SSC CGL Science. Then Physics (Newton's laws, light, electricity units) and Chemistry (acids/bases, common chemicals). Focus on Biology first.
Is science important for Railway NTPC?
Yes — Science is one of the highest-weightage sections in Railway NTPC with 5–8 questions per paper. General Science (Physics + Chemistry + Biology) is crucial. Use GK Capsule's Railway NTPC + Science filter to practice specifically.
How to prepare General Science for government exams?
Practice PYQs daily on GK Capsule. Make a quick-reference list of: vitamin deficiency diseases, SI units, Newton's laws, acid/base reactions, and human body facts. These repeat constantly across SSC, Railway and Bank exams.