Which of the following statements is not true about classical smog?

Options

A. Its main components are produced by the action of sunlight on emissions of automobiles and factories
B. Produced in cold and humid climate
C. It contains compounds of reducing nature
D. It contains smoke, fog and sulphur dioxide

Answer

A

Explanation

Smog is of two types: classical smog and photochemical smog.
Classical smog occurs in cold humid climate. It is a mixture of smoke, fog and sulphur dioxide. Chemically it is a reducing mixture that’s why, it is also called as reducing smog.