Unit I – General Science / பொது அறிவியல் (TNPSC Group 4)
Medium-difficulty multiple-choice quiz covering high-leverage concepts from basic physics, chemistry, biology and environment relevant to TNPSC Group 4 Unit I.
Try this quiz
Play through the questions and see your score instantly
Ready to test your knowledge?
8 questions · Quick play · Instant results
Make your own quiz videos
Turn any topic into a polished video quiz — with AI-powered questions, voiceover, and animations. No video editing skills needed.
Unlimited quizzes, free to start
Create as many quizzes as you want. Describe your topic and AI builds the questions, answers, and explanations for you.
Customise everything
Pick from stunning templates, tweak colours and fonts, add your branding, and choose between vertical or landscape formats.
Export-ready videos
Download HD videos optimised for TikTok, YouTube Shorts, Instagram Reels, or full-length YouTube — one click, no editing.
No credit card required
Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: Which property best explains why ice floats on water?
Higher surface tension of ice
Liquid water chemically reacts to produce lighter molecules
Ice has magnetic properties
Lower density of frozen water compared to liquid water
Question 2: Which process in plants primarily converts light energy into chemical energy?
Photosynthesis
Respiration
Germination
Transpiration
Question 3: Why is biodiversity important for ecosystem stability?
It prevents any species from reproducing
It increases the amount of sunlight reaching the ground
It reduces the number of food chains
Diverse species provide functional redundancy and resilience
Question 4: Which gas primarily causes the greenhouse effect leading to global warming?
Carbon dioxide from fossil fuel use and deforestation
Nitrogen, because it is the most abundant atmosphere gas
Helium, due to its lightness
Argon, from soil emissions
Question 5: Which statement best describes an acid according to the Brønsted–Lowry definition?
A compound that always has a sour taste
A material that increases pH when dissolved
A substance that conducts electricity better than water
A proton (H+) donor in a chemical reaction
Question 6: If an object moves at constant velocity, which of the following must be true about the forces on it?
Gravity is not acting on the object
Friction must be absent
The net force acting on the object is zero
A single unbalanced force is accelerating it
Question 7: Which human activity most directly increases groundwater depletion?
Planting native trees in recharge areas
Installing rainwater harvesting systems
Reducing surface water use
Excessive withdrawal for irrigation and industry
Question 8: Which practice most effectively reduces spread of infectious respiratory diseases?
Only taking antibiotics when feeling ill
Relying solely on herbal remedies
Vaccination combined with good hand hygiene and respiratory etiquette
Avoiding all outdoor air