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प्रश्न
Assertion (A): Photochemical smog is mainly composed of nitrogen oxides, volatile organic compounds, ozone and peroxyacetyl nitrates.
Reason (R): Photochemical smog develops in cold weather conditions by the interaction of secondary pollutants.
विकल्प
Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.
Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.
Assertion (A) is true but reason (R) is false.
Both assertion (A) and reason (R) are false.
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उत्तर
Assertion (A) is true but reason (R) is false.
Explanation:
Photochemical smog contains nitrogen oxides, volatile organic compounds, ozone and PAN. It forms under sunlight through reactions involving primary pollutants, not in cold weather through interactions of secondary pollutants.
