MCQOPTIONS
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| 1. |
Which of the following pairs of air pollutant causes acid rain ? |
| A. | Sulphur dioxide–Carbon dioxide |
| B. | Oxides of nitrogen–Carbon monoxide |
| C. | Sulphur dioxide–Oxides of nitrogen |
| D. | Ammonia–Chlorine |
| Answer» D. Ammonia–Chlorine | |