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The smog is essentially caused by the presence of (a) O2 and O3

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The smog is essentially caused by the presence of

(a) O2 and O3 

(b) O2 and N2 

(c) Oxides of sulphur and nitrogen 

(d) O3 and N2

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1 Answer

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Best answer

Correct Option (a) O2 and O3 

Explanation:

Smog is formed by the action of sunlight on unsaturated hydrocarbons and nitrogen oxides. 

Smog mainly contains higher concentration of Peroxyacetyl nitrate (PAN) formed by the reaction of NO2, O3 and unsaturated hydrocarbons.

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