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Assertion : Photochemical smog is produc...

Assertion : Photochemical smog is produced by nitrogen oxides.
Reason : Vehicular pollution is a major source of nitrogen oxides.

A

If the both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false statements.

Text Solution

Verified by Experts

The correct Answer is:
B
`NO_2+ " U.V. Light " to NO+O`
Atomic oxygen produced as above reacts with hydrocarbons to give a variety of free hydrocarbon radicals aldehyde, ketones, `O_3`, peroxyacetyl nitrate (PAN) etc. PAN mixes with the fog and gets condensed on smoke or dust particles in the air to for a smog which is called photochemical smog.
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