Question

Which of the following statements is wrong about photochemical smog?
A) It has a high concentration of oxidizing agents.
B) It has a low concentration of oxidizing agents.
C) It can be controlled by controlling the release of $N{O_2}$, hydrocarbon, ozone, etc
D) Plantation of some plants like pinus helps in controlling photochemical smog

Answer 1

We have to know that photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight.

Complete answer:
We need to remember that photochemical smog is a mixture of air pollutants which have been chemically altered into further noxious compounds by exposure to sunlight. The main components of photochemical smog are nitrogen oxides, Volatile Organic Compounds (VOCs), tropospheric ozone, and PAN (peroxyacetyl nitrate). As we know , photochemical smog is created by the interaction of sunlight with certain atmospheric chemicals. We must remember that ozone is the principal component of air pollution of this kind. We have to know that the ozone in the stratosphere protects us from harmful ultraviolet radiation but it is detrimental to human health when it is present on the ground level.

As we know that the photochemical smog has low concentration of oxidizing agents and not the high thus option A) is correct as this statement is wrong about photochemical smog.

Note:
We need to remember that photochemical smog has a number of negative effects on the environment and human beings. We need to know that the chemicals contained within it, when combined with hydrocarbons, form molecules which cause eye irritation. The atmospheric radicals interfere with the nitrogen cycle by stopping ground level ozone from being eliminated.