Chemistry MCQs

Question 1

Rusting of iron takes place due to

Accepted Answer

Oxidation

Answer

Carbonation

Answer

Exfoliation

Answer

Corrosion

Question 2

Combustion of a candle is a/an

Accepted Answer

Exothermic reaction

Answer

Photochemical reaction

Answer

Physical change

Answer

Endothermic reaction

Question 3

Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Accepted Answer

Butane

Answer

Methane

Answer

Ethane

Answer

Propane

Question 4

Candle is a mixture of

Accepted Answer

Paraffin was and stearic acid

Answer

Bees wax and stearic acid

Answer

Higher fatty acids and stearic acid

Answer

Bees wax and paraffin wax

Question 5

Coal is formed from

Accepted Answer

Compressed and hardened biomass

Answer

Crude oil

Answer

Deposit of animal waste

Answer

Coke

Question 6

Cooking gas is a mixture of

Accepted Answer

Butane and propane

Answer

Methane and ethylene

Answer

Carbon dioxide and oxygen

Answer

Carbon monoxide and carbon dioxide

Question 7

Thermal electricity is generated by using which of these ?

Accepted Answer

Coal, Natural Gas and Petroleum

Answer

Coal only

Answer

Coal and Natural Gas only

Answer

None of these

Question 8

Which of the following is the major constituent of LPG?

Accepted Answer

Butane

Answer

Methane

Answer

Ethane

Answer

Propane

Question 9

Which variety of coal contains recognisable traces of the original plant material ?

Accepted Answer

Peat

Answer

Anthracite

Answer

Lignite

Answer

Bitumen