The main constituents of photochemical smog are:
A. Sulphur dioxide, Nitrogen dioxide and Nitric oxide
B. Nitrogen dioxide, Ozone and Nitric oxide
C. Sulphur dioxide, Ozone and Hydroflurocarbons
D. Nitrogen dioxide, Ozone and Hydroflurocarbons
Answer:B
The main constituents of photochemical smog are:
A. Sulphur dioxide, Nitrogen dioxide and Nitric oxide B. Nitrogen dioxide, Ozone and Nitric oxide C. Sulphur dioxide, Ozone and Hydroflurocarbons D. Nitrogen dioxide, Ozone and Hydroflurocarbons