Acid rain is caused by increase in the atmo- ,spheric concentration of

Options

A. `SO_(2)` and `NO_(2)`
B. `SO_(3)` and `CO`
C. `CO_(2)` and `CO`
D. `O_(3)` and dust

Answer

A

Explanation

Acid rain is caused by increase in the atmospheric concentration of `SO_(2)` and `NO_(2)`. These mix with water vapour to form sulphuric acid (`H_(2)SO_(4))` and nitric acid `(HNO_(3))` respectively which falls on earth in the form of acid rain.