MCQOPTIONS
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MCQOPTIONS
| 1. |
No smog occurs if |
| A. | cool air is allowed to escape |
| B. | if pollutants like smoke and sulphur dioxide are prevented from escape |
| C. | if cool air and pollutants are prevented from escape |
| D. | if pollutants like smoke and sulphur dioxide are escape |
| Answer» D. if pollutants like smoke and sulphur dioxide are escape | |