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
Ans . C
Q.42 Duralumin is an alloy of copper and
(A) lead
(B) zinc
(C) tin
(D) aluminium
Ans . D
Q.43 In which of the following metals is the speed of sound the fastest?
(A) copper
(B) aluminium
(C) steel
(D) gold
Ans . B
Q.44 Which of the following is the heaviest metal?
(A) gold
(B) osmium
(C) mercury
(D) lead
Ans . B
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
Ans . D
Q.46 Which of the following metals forms an amalgam with other metals?
(A) magnesium
(B) mercury
(C) manganese
(D) molybdenum
Ans . B
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
Ans . A
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
Ans . B
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
Ans . D
Q.50 The toxicity of which of the following heavy metals leads to liver cirrhosis?
(A) Copper
(B) Lead
(C) Mercury
(D) Zinc
Ans . A
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