MCQOPTIONS
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| 1. |
Photochemical smog consists of excessive amount of X, in addition to aldehydes, ketones, peroxyacetyl nitrate (PAN), and so forth X is: |
| A. | CO |
| B. | \[C{{H}_{4}}\] |
| C. | \[{{O}_{3}}\] |
| D. | \[C{{O}_{2}}\] |
| Answer» D. \[C{{O}_{2}}\] | |