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General Science MCQ Practice
Practice General Science questions with instant scoring, correct answer highlighting, detailed solutions and first-click AI explanation caching for missing explanations.
📚 Questions: 553
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Q. 3750
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The pigment which is responsible for blood clotting is:
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Q. 3749
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Which among the following diseases are not bacterial?
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Q. 3748
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A substance used in the fire extinguisher under the trade name of Pyrene is:
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Q. 3747
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To an astronaut in space, the sky appears to be:
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Q. 3746
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The study of hair and its diseases is known as:
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Q. 3745
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Gasoline is obtained from crude petroleum by:
- Correct answer: A — Fractional distillation
- Why: Crude oil is heated and its mixture is passed up a fractionating column; components with different boiling points vaporize and condense at different heights, giving gasoline in a specific boiling-range fraction.
- Key concept: Boiling-point separation of mixtures; fractional distillation separates by boiling range, not by evaporation alone.
- Misleading options: Sublimation and simple evaporation do not separate crude oil into useful fuel fractions; (B) is the same as (A) but redundancy, others are incorrect.
- Exam tip: Remember gasoline corresponds to mid-range distillation fractions (roughly 40–200°C depending on refinery).
Q. 3738
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Volumetric method for determination of fat % of milk is:
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Q. 3737
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Thiamine deficiency or beriberi, refers
to the lack of:
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Q. 3736
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Plants prepare their food by:
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Q. 3735
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Which of the following animals is carnivorous?
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