Question

Select the oxides responsible for acid rain.

• A. Sulphur dioxide
• B. Carbon dioxide
• C. Nitrogen dioxide
• D. Ozone

Answer 1

Answer: (A), (C)

The correct options are
A Sulphur dioxide
C Nitrogen dioxide

Acid rain results when sulphur dioxide,$S{O}_2$ and nitrogen oxides ($NO$ and $N{O}_2$) are released into the atmosphere and are transported by the wind and air currents. These oxides react with water, oxygen and other chemicals to form sulphuric acid and nitric acid. These acids fall to the ground as Acid Rain. While a small portion of the gases that cause acid rain is from natural sources such as volcanoes, most of it comes from the burning of fossil fuels.