Quiz Category · Science
Science
Biology, chemistry, physics, and the natural world.
From cells and circuits to stars and species — a steady stream of questions across the major scientific disciplines.
Science here splits across the four blocks a school curriculum recognises: physics, chemistry, biology, and earth and space science, with a smaller subset of questions on scientific method, units, and the history of science. Easy rounds stay close to NCERT-level content — photosynthesis, states of matter, Newton's laws stated plainly, the names of bones and bodies in the solar system. Medium rounds expect a working memory of the periodic table, basic genetics, common chemical formulae, and the order of magnitudes that separate a micrometre from a megaparsec. Hard rounds reach into the kind of detail that a bored physics teacher might use to separate the curious from the merely diligent: the specific year of a discovery, the SI unit for a quantity most people only see in textbooks, the structural difference between two molecules that students routinely confuse. The category is most useful for school students from class 8 onward, NEET and JEE aspirants doing low-stakes recall practice, and anyone whose science education stopped a few decades ago and wants to find out what stayed.
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10 questions per round24 science questions with answers
Across easy, medium and hard · reveal each answer to check yourself-
01 What is the closest star to Earth? easy
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The correct answer is A. Proxima Centauri.
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02 What is the term for the amount of matter in an object? easy
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The correct answer is B. Mass.
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03 What scale is used to measure the acidity of a solution? easy
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The correct answer is B. pH scale.
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04 Which gas do humans exhale? easy
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The correct answer is C. Carbon Dioxide.
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05 What is the primary source of energy for the Earth? easy
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The correct answer is B. Sun.
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06 What is the primary function of the digestive system? easy
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The correct answer is B. Nutrient absorption.
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07 What part of the atom has no charge? easy
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The correct answer is B. Neutron.
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08 What is the main function of red blood cells? easy
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The correct answer is B. Transport oxygen.
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09 Which electromagnetic radiation has the longest wavelength? medium
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The correct answer is D. Radio waves.
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10 What type of rock is formed from the accumulation of sediment? medium
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The correct answer is C. Sedimentary.
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11 Which law states that the force of gravity is inversely proportional to the square of the distance between two objects? medium
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The correct answer is C. Universal Law of Gravitation.
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12 Which organelle is involved in the synthesis of lipids? medium
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The correct answer is C. Smooth endoplasmic reticulum.
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13 What is the main driver of the water cycle on Earth? medium
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The correct answer is C. Solar energy.
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14 Which discipline of science studies the composition and structure of Earth? medium
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The correct answer is B. Geology.
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15 Which of the following best describes the term 'abiotic'? medium
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The correct answer is B. Non-living components.
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16 What type of bond involves the sharing of electron pairs between atoms? medium
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The correct answer is B. Covalent bond.
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17 Which gas is a major greenhouse gas contributing to climate change? hard
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The correct answer is C. c) Methane.
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18 What is the most abundant protein in the human body? hard
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The correct answer is B. b) Collagen.
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19 Which planet in our solar system has the longest day relative to its year? hard
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The correct answer is A. a) Venus.
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20 In which phase of meiosis does crossing over occur? hard
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The correct answer is A. a) Prophase I.
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21 What is the function of ATP synthase in cellular respiration? hard
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The correct answer is C. c) To synthesize ATP.
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22 Which fundamental force is responsible for the interaction between quarks? hard
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The correct answer is C. c) Strong nuclear force.
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23 What is the technique used to determine the age of fossils based on the decay of radioactive isotopes? hard
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The correct answer is B. b) Carbon dating.
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24 What type of symmetry is exhibited by starfish? hard
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The correct answer is B. b) Radial symmetry.
The full science pool runs to 343 questions — 113–115 questions per difficulty across easy, medium and hard. Each round you play is shuffled fresh, so the same ten never come up twice in a row. Pick a difficulty above to start a timed round, or scroll on for related categories.
Frequently asked questions
About the science quiz- What topics are covered in the science quiz?
- Physics, chemistry, biology, astronomy, and earth sciences. The set leans toward facts and concepts that come up in general-knowledge contexts rather than deep specialist content.
- How does the science quiz handle medical or biological questions?
- Biology questions cover basic anatomy, cell biology, classification of organisms, ecology, and well-known medical breakthroughs. We avoid clinical-specialist content (treatment protocols, drug interactions) since the audience is general.
- Is this suitable for school students or competitive exam aspirants?
- Yes — easy and medium difficulty maps onto secondary-school curricula and the general-awareness sections of competitive exams. Hard reaches into territory most non-scientists won't know.
- Are questions about the latest scientific developments included?
- Yes, where the development is well-established — Nobel-winning research, major ISRO/NASA missions, climate science consensus. Bleeding-edge or contested research is avoided.