GK Questions on Metal and Alloys for Competitive Exams
Chemistry GK
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Q.11 Which one of the following does not contain silver?
A. Horn silver
B. Ruby silver
C. German silver
D. Lunar caustic
Ans . C
Q.12 Nail polish remover contains
A. acetone
B. benzene
C. acetic acid
D. petroleum ether
Ans . A
Q.13 What is a mixture of potassium nitrate powdered charcoal and sulphur called?
A. paint
B. glass
C. gun powder
D. cement
Ans . C
Q.14 Which is the heaviest metal?
A. iron
B. mercury
C. nickel
D. osmium
Ans . B
Q.15 Bleaching action of chlorine is by
A. oxidation
B. reduction
C. decomposition
D. hydrolysis
Ans . C
Q.16 Radon is
A. germon radio
B. inert gas
C. artificial fibre
D. an explosive
Ans . B
Q.17 pH of water is
A. 4
B. 7
C. 12
D. 18
Ans . B
Q.18 pH of blood is
A. 4
B. 6.4
C. 7.4
D. 8
Ans . C
Q.19 Natural rubber is a polymer derived from
A. isoprene
B. ethylene
C. propylene
D. butadiene
Ans . A
Q.20 First atomic theory was proposed by
A. John Dalton
B. E.Rutherford
C. De Broglie
D. D.I.Mendeleef
Ans . A
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