Assertion : Classical smog is oxidising smog whereas photochemical smog ie reducing smog.
Reason : Classical smog occurs in warm, dry and sunny climate whereas photochemical smog occurs in cool humid climate .

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the c orrect explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

d

Explanation

Classical smog occurs in cool humid climate. Chemically it is a reducing mixture and so it is also called as reducing smog
Photochemical smog occurs in warm , dry and sunny climate. It has concentration of oxidising agents and is therefore, called as oxidising smog.