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| 1. |
Define - Acid rain. |
| Answer» Solution :RAIN water has a pH of 5.6 due to the DISSOLUTION of `CO_(2)` into it. Oxides of sulphur and NITROGEN in the atmosphere· MAY be absorbed by droplets of water that make up the clouds and get chemically converted into sulphuric acid and nitric acid.. Due to this the pH of rain water drops below the LEVEL of 5.6. Hence it is called acid rain. | |