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Assertion : Photochemical smog results from the action of sunlight on NO _x and hydrocarbons. Reason : It occurs in warm, dry and sunny climate.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

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

Step-by-step solution

NO _x and hydrocarbons in the presence of sunlight give ozone, aldehydes, ketones and peroxyacyl nitrates (PAN) which form photochemical smog.

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