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Practice questions on General Science.

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471. If the length of the filament in an electric bulb is reduced, the latter will glow with intensity that is
A. low
B. medium
C. more
D. normal as in original
Explanation:
472. Which mirror is used as rear view mirror in vehicles ?
A. Inverted
B. Plane
C. Concave
D. Convex
Explanation:
473. Sparkling red colour after the blast of fire crackers is due to the presence of
A. sulphur
B. sodium
C. magnesium
D. strontium
Explanation:
474. The deficiency of Which one of the following gives rise to a disease characterised by oedema, subcutaneous haemorrhages, anaemia and pathological changes in the teeth and gums ?
A. Retinol
B. Vitamin B Complex
C. Ascorbic acid
D. Gyanocobalamin
Explanation:
475. The dufference between a nuclear reactor and an atomic bomb is that
A. no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction.
B. no chain reaction takes place in atomic bomb while it takes place in nuclear reactor.
C. the chain reaction in nuclear reactor is controlled.
D. the chain reaction in nuclear reactor is not controlled.
Explanation:
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