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| 1. |
Photochemical smog formed in congested metropolitan cities mainly consists of :A. Ozone, peroxyacyl nitrate and `NO_(x)`B. smokes peroxyacyl nitrate and `SO_(2)`C. hydrocarbons , `SO_(2)` and `CO_(2)`D. Hydrocarbons, ozone and `SO_(x)` |
| Answer» Correct Answer - A | |