Question

Waht do you mean by acid rain? Explain.

Answer 1

Acid Rain definition:

Acid Rain is any type of environmental precipitation phenomena that has water in acidic pH levels (that is, pH < 7)

Causes of acid rain:

• the main cause of acid rain is environmental pollution, mainly Air pollution.

• When fossil fuels, hydrocarbons or sulphurous chemicals are burnt in open air, the combustion releases acidic gases like $CO_{2}, SO_{2}, SO_{3}$

• When these cases dissolve in the rain water, they produce acids on dissolution.

• For example, $CO_{2}$ on dissolving produces carbonic acid $H_{2}CO_{3}$

Effects of acid rain:

• Acidic rain causes harm to crops, since acid levels change pH of soil.
• When the water bodies turn acidic, aquatic animals may die.
• Stones like marble turn yellowish and tinted due to acid rain

Answer 2

Answer:

Acid rain, also known as acid deposition, is a general phrase that refers to any type of precipitation that contains acidic components, such as sulfuric or nitric acid, and falls to the ground in wet or dry form from the atmosphere.

Explanation:

Acid rain is caused by pollution in the atmosphere. The acid can also take the form of snow, mists, and dry dust. Rain can fall many miles from the source of pollution, but it can have a significant impact on soil, plants, buildings, and water wherever it lands. Because power plants, industry, and automobiles all consume fossil fuels, they all emit damaging gases. Sulphuric and nitric acids are formed when some of these gases (particularly nitrogen oxides and sulphur dioxide) combine with the tiny droplets of water in clouds. Acid rain occurs when the rain from these clouds falls as a very weak acid.