The smog is essentially caused by the presence of

$O_{2} a n d O_{3}$

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$O_{3} a n d N_{2}$

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Oxides of sulphur and nitrogen

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$O_{2} a n d N_{2}$

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Solution

The correct option is C
Oxides of sulphur and nitrogen

Smog is Smoke + Fog. Smog contains mainly $S O_{2}$ and $N O_{2}$

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