TNPSC Group 4 Chemistry Online Mock Test in English and Tamil - 3

Question: 11

Table salt (Nacl) is a product of:

(A) Strong acid and weak base

(B) Strong acid and strong base

(C) Weak acid and strong base

(D) Weak acid and weak base

Question: 12

Vulcanization is a

(A) Process of hardening of rubber by heating it with sulphur

(B) Process connected with the making of voltaic cells

(C) Method of degrade polymers

(D) Science of studying volcanoes

Question: 13

Glycol is added to aviation gasoline because it

(A) Reduces consumption of petrol

(B) Prevents freezing of petrol

(C) Increases efficiency of petrol

(D) Reduces evaporation of petrol

Question: 14

Which one among the following will you put into pure water in order to pass electric current through it?

(A) Sugar

(B) Mustard oil

(C) Lemon juice

(D) Kerosene

Question: 15

A radioactive substance has a half life of four months. Three –fourth of the substance would decay in

(A) 3 months

(B) 6 months

(C) 8 months

(D) 12 months