TNPSC Group 4 Chemistry Study Material in English Tamil - 3

Question: 11

Nucleon is the name which is used for

(A) Electron and neutron

(B) Electron and proton

(C) Proton and neutron

(D) None of these

Question: 12

Which one of the following is not a chemical change?

(A) Cracking of petroleum

(B) Crystallization of table salt from sea water

(C) Fermentation of sugarcane juice

(D) Burning of coal in air

Question: 13

The highest grade of coal whose surface is shining and has the highest calorific value, is

(A) Peat

(B) Lignite

(C) Bituminous

(D) Anthracite

Question: 14

______ is used in beauty parlours for hair setting.

(A) Silicon

(B) Sulphur

(C) Chlorine

(D) Phosphorus

Question: 15

When the water vapour is poured on the red heated coke then the mixture of carbon monoxide and hydrogen gas is produced which is

(A) Biogas

(B) Producer gas

(C) Water gas

(D) Coal gas