Photochemical smog formed in congested metropolitan cities mainly consists of :

Options

A. Ozone, peroxyacetyl nitrate and `NO_x`
B. Smoke, peroxyacetyl nitrate and `SO_2`
C. Hydrocarbons, `SO_2` and `CO_2`
D. Hydrocarbons, ozone and `SO_x`

Answer

B

Explanation

Photochemical smog refers to smog produced when sunlight interacts with molecules of harmful chemicals and pollutants in the Earth.s atmosphere.