Q12 / 90 · JEE Main 2022 (28 Jun Shift 2) · Chemistry

Correct statement about photo-chemical smog is

  • A
    It occurs in humid climate.
  • B
    It is a mixture of smoke, fog and SO2.
  • C
    It is reducing smog.
  • Correct answer
    D
    It results from reaction of unsaturated hydrocarbons.

Solution

Photochemical smog occurs in warm, dry and sunny climate.

Photochemical smog results from the action of sunlight on unsaturated hydro carbons and nitrogen oxide.

The common components of photochemical smog are ozone, nitric oxide, acrolein, formaldehyde and peroxyacetyl nitrate (PAN).

It is oxidising smog.

Hence, the correct answer is option: 'D'.

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