Question

Photochemical smog is related to pollution of:
(A) Soil
(B) Air
(C) Water
(D) None of these

Answer 1

Hint: An attempt to this question can be made by understanding the term smog. Smog is widely considered to cause air pollution. Now based on this, try to determine the meaning of photochemical smog and the chemicals causing it. Now you can determine the type of pollution, photochemical smog is related to.

Complete answer:
Smog is considered as the contraction of the terms smoke and fog. Smog is caused by the burning of fossil fuels like coal. Although it used to produce energy, it releases clouds of smoke that pollute the air.
Along with that, the emissions from vehicles contribute to the formation of smog. The main culprits from the transportation sources are oxides of nitrogen and oxides of carbon.
Photochemical smog is a type of smog often referred to as the summer smog. It is defined as the chemical reaction of sunlight on nitrogen oxides and other volatile organic compounds present in the atmosphere. It leaves airborne particles and ground-level ozone.
The formation of photochemical fog depends on primary as well as the formation of secondary pollutants.
From the above statements we can conclude that photochemical smog is related to pollution of air.

Therefore, the correct answer is option (B).

Note: It is important to reduce our dependence on fossil fuels. They harm the environment and cause global warming. This leads to the melting of polar ice caps that undermine aquatic life. We need to shift to clean energy in the near future.