GK Questions on Metal and Alloys for Competitive Exams

General Science Questions

Q.41 Plumbism is a condition due to the poisoning effect of -

(A) lead

(B) mercury

(C) copper

(D) uranium

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Q.42 Duralumin is an alloy of copper and

(A) lead

(B) zinc

(C) tin

(D) aluminium

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Q.43 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.44 Which of the following is the heaviest metal?

(A) gold

(B) osmium

(C) mercury

(D) lead

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Q.45 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.46 Which of the following metals forms an amalgam with other metals?

(A) magnesium

(B) mercury

(C) manganese

(D) molybdenum

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Q.47 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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Q.48 Supplements containing which of the following metals are generally prescribed for persons suffering from anaemia?

(A) calcium

(B) iron

(C) gold

(D) magnesium

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Q.49 Nichrome is used as heating element because of its -

(A) low resistivity and high melting point

(B) high resistivity and low melting point

(C) low resistivity and high melting ppoint

(D) high resistivity and high melting point

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Q.50 The toxicity of which of the following heavy metals leads to liver cirrhosis?

(A) Copper

(B) Lead

(C) Mercury

(D) Zinc

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