Air Pollution MCQ with answer and solution

Concept

Anthropogenic sources are man-made. Natural sources include volcanoes, dust storms and forest fires.

Step-by-step solution

1. Anthropogenic means caused by human activity. 2. Volcanoes, dust storms and forest fires are natural sources. 3. Burning of fossil fuels (vehicles, industries, power plants) is a human activity. 4. Answer is (B).

Explanation

Air pollution sources are natural or anthropogenic (man-made). Burning coal, petrol and diesel is done by humans, so it is anthropogenic. The other options are natural events.

Why the other options are wrong

A: Volcanoes are a natural source. C: Dust storms are a natural source. D: Forest fires are usually treated as a natural source in such questions.

Shortcut

Anthropogenic = made by humans. Find the human activity.

Common mistake

Choosing forest fires because some fires are started by people. In standard classification they are natural.