Q.

Correct statement about photo-chemical smog is :

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a

It results from reaction of unsaturated hydrocarbons.

b

It is a mixture of smoke, fog and SO2.

c

It occurs in humid climate.

d

It is reducing smog.

answer is D.

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Detailed Solution

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Photo chemical smog results from the action of sunlight on unsaturated hydro carbons and nitrogen oxide.

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