TNPSC Group 4 Online Mock Test 2020-21 - 2
Question: 7
The metal which forms hydrogen after the reaction of an acid with an alkali is
(A) Calcium
(B) Potassium
(C) Zinc
(D) Sodium
Ans: D
Sodium
Question: 8
Nylon is a
(A) Poly saccharide
(B) Polyster
(C) Polyamide
(D) Vinyl polymer
Ans: C
Polyamide
Question: 9
The ozone layer protects us from too much
(A) Temperature fluctuation
(B) Ultraviolet radiation
(C) Gamma radiation
(D) Carbon dioxide
Ans: B
Ultraviolet radiation
Question: 10
An example for amorphous solid is
(A) Diamond
(B) Carbon black
(C) Salt
(D) Metal
Ans: B
Carbon black
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