Explain the following in detail.
Acid Rain.

Explanation

Oxides of nitrogen and sulphur released from automobiles and industries enter into atmosphere and dissolves in water to from the acids `HNO_3 " and " H_2 SO_4`. These acids dissolve in rain water and come down to earth as acid rain.
`2SO_2 +2H_2O+O_2 to 2H_2 SO_4`
`4NO_2 +2H_2O+O_2 to 4 HNO_3`
1) Acid rain is harmful for agriculture. It washes away the nutrients required for the growth of plants. So crops cannot grow in the areas where the acid rain falls.
2) Aquatic animals and plants cannot live in acid water. So they die in the lakes, ponds, rivers where acid rain falls.
3) The metal pipes which carry water corrodes in the acid water where the acid rain falls.
4) Acid rain damages buildings and other structures made with stone or metal. Eg. Tajmahal in India has been affected by acid rain.