TNPSC Group 4 Online Mock Test 2020-21 - 2

Question: 6

Which one has hydrogen bonding?

(A) HI

(B) HF

(C) HBr

(D) HCl

Ans: B

HF

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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