Question

Which of the following is the cause of acid rain?

• A. Water pollution
• B. Air pollution
• C. Noise pollution
• D. Land pollution

Hint:

Acid rain is a classic example of how air pollutants can transform in the atmosphere and cause environmental problems far from their source. The main culprits are \(SO_2\) and \(NO_x\).

Answer 1

The Correct Option is B

Step 1: Define acid rain. Acid rain is a form of precipitation containing acidic components, such as sulfuric or nitric acid, that fall to the ground from the atmosphere in wet or dry forms.

Step 2: Identify its cause. The primary cause of acid rain is the emission of sulfur dioxide (\(SO_2\)) and nitrogen oxides (\(NO_x\)) into the atmosphere. These gases are released by industrial processes and the burning of fossil fuels.

Step 3: Classify the cause. The emission of these gases into the atmosphere is a form of air pollution. They react with water, oxygen, and other chemicals to form the acidic pollutants.