Question
Name two acids that are usually present in rain water.

Answer

Sulphuric acid $\left(\mathrm{H}_2 \mathrm{OS}_4\right)$ and Nitirc acid $\left(\mathrm{HNO}_3\right)$ are present in acid rain. Sulphur oxides and oxides of nitrogen combine with water and oxygen in air and fall on earth as acid rain in the form of Sulphur and nitric oxides.

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