Question

Photochemical smog formed in congested metropolitan cities mainly consists of

• A. Ozone, peroxyacetyl nitrate and $NO_{X}$
• B. Hydrocarbons, $SO_{2} \, a n d \, C O_{2}$
• C. Smoke, peroxyacetyl nitrate and $SO_{2}$
• D. Hydrocarbons, ozone and $SO_{X}$

Answer 1

Answer: (A)

Photochemical smog or oxidizing type of pollution is characterized by the presence of large concentration of ozone, oxides of nitrogen and various hydrocarbons. It occurs in Los Angels.