Top 500 GK Questions 2023-24

General Knowledge

Q.481 Into which of the following metals does radioactive Uranium decay when it loses all its radioactivity?

(A) Radium

(B) Carbon

(C) Lead

(D) Hydrogen

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Q.482 Galvanized iron has a thin coating of :

(A) copper

(B) tin

(C) zinc

(D) aluminium

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Q.483 The Venus symbol (♀), a circle with a small cross below it, is the gender symbol for female and also the metal -

(A) gold

(B) copper

(C) zinc

(D) silver

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Q.484 Plumbism is a condition due to the poisoning effect of -

(A) lead

(B) mercury

(C) copper

(D) uranium

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Q.485 Duralumin is an alloy of copper and

(A) lead

(B) zinc

(C) tin

(D) aluminium

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Q.486 In which of the following metals is the speed of sound the fastest?

(A) copper

(B) aluminium

(C) steel

(D) gold

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Q.487 Which of the following is the heaviest metal?

(A) gold

(B) osmium

(C) mercury

(D) lead

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Q.488 Which of the following gases is responsible for discolouration of brass in air?

(A) nitrogen oxide

(B) carbon dioxide

(C) water vapour

(D) hydrogen sulphide

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Q.489 Which of the following metals forms an amalgam with other metals?

(A) magnesium

(B) mercury

(C) manganese

(D) molybdenum

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Q.490 Which of the following metals is central to chlorophyll, the pigment which gives green colour to leaves of plants?

(A) magnesium

(B) manganese

(C) aluminium

(D) sodium

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