Given below are two statements:
Statement I: Classical smog occurs in cool humid climate. It is a reducing mixture of smoke, fog and sulphur dioxide
Statement II: Photochemical smog has components, ozone, nitric oxide, acrolein, formaldehyde, PAN etc.
In the light of above statements, choose the most appropriate answer from the options give below

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Statement I is correct but statement II is incorrect

Both Statement I and Statement II are correct

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are incorrect

answer is A.

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Detailed Solution

Classical smog occurs in cold humid climate. It is a mixture of smoke, fog and sulphur dioxide. Presence of SO₂ makes it both acidic as well as reducing.
Photochemical smog has components, ozone, nitric oxide, acrolein, formaldehyde, PAN etc.

${CH}_{4} + O_{3} \to HCHO + H_{2} O + {CH}_{2} = CH - CHO + (PAN - peroxyacetyl nitrate)$

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