Question

Soil pollution is caused by
A.Aerosol
B.Ozone
C.Acid rain
D.PAN

Answer 1

Answer:

Option C. Acid Rain is the correct option.

Explanation:

Soil pollution is caused by Acid rain.

• When sulfur dioxide & nitrogen dioxide are emitted into the atmosphere and carried by wind or air currents, after which they react with water, oxygen, and other chemical compounds to form sulfuric & nitric acids, further mixing with water and other materials, they fall on the ground in the form of Acid rain.
• Most of the sulfur dioxide & nitrogen dioxide come from the following sources:-

1. Burning of fossil fuels to produce electricity.
2. Heavy equipment & vehicles.
3. Industries like oil refineries.

• Acid rain has a pH between 4.2-4.4, (normal rain pH-5.6 approx)
• Acid rain decreases the amounts of nutrients & minerals found in the soil which are required by plants and trees to grow by decreasing the pH of the soil, causing the soil to become more acidic.