Question

Which is not an air pollutant?

• A. Phosphate
• B. Hydrocarbons
• C. Pollen grains
• D. Carbon monoxide
• E. Sulphur dioxide

Answer 1

The correct option is A Phosphate

A. Phosphate is a charged ion that contains mineralized phosphorus.

B. Hydrocarbons are the compounds containing hydrogen and carbon. They are released from vehicles due to burning of fuels.

C. Pollen grains can cause allergic reactions to some people and hence, considered as air pollutants.

D. Carbon monoxide is released from the combustion of fuels and pollute air.

E. Sulphur dioxide is emitted from the vehicles. It is responsible for acid rain.

Hence, phosphate is not an air pollutant.

So, the correct answer is 'Phosphate'.