JEE Main202228 Jun 2022Evening ShiftChemistryEnvironmental ChemistryActual
Correct statement about photo-chemical smog is
Options
- AIt occurs in humid climate.
- BIt is a mixture of smoke, fog and SO 2 .
- CIt is reducing smog.
- DIt results from reaction of unsaturated hydrocarbons.
Correct answer
D. It results from reaction of unsaturated hydrocarbons.
Step-by-step 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.