MCQ
Photochemical smog is formed by :
- ANitrogen oxide.
- BHydrocarbons.
- CNitrogen oxide and hydrocarbons.
- ✓Solar radiations upon nitrogen oxide and hydrocarbons.
✓
Answer
Correct option: D.
Solar radiations upon nitrogen oxide and hydrocarbons.
The photochemical smog refers to the smog which contains a high concentration of $\mathrm{NO}_x$, ozone and other volatile compounds. The photochemical smog contains highly reactive species like $\mathrm{NO}_x,$ hydrocarbons and ozone which can produce reactive radicals on reaction with sunlight. This cause destruction of the chlorophyll pigments, blazing and bleaching of the leaves and other parts of the plants.
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