Solid Waste Management MCQ with answer and solution

Concept

Eutrophication is nutrient enrichment of water bodies, so it is water pollution, not soil pollution.

Step-by-step solution

1. Mining wastes are dumped on land, so they pollute soil. 2. Agricultural activities (fertilizers, pesticides) pollute soil. 3. Domestic wastes (solid waste dumping) pollute land. 4. Eutrophication is excess nutrients in lakes and ponds that causes algal bloom. This is water pollution. 5. So the answer is Eutrophication.

Explanation

Eutrophication happens in water bodies when too much nitrogen and phosphorus enter them, causing algal growth and low oxygen. It is a water pollution problem. Mining, farming and domestic wastes directly pollute soil and land.

Why the other options are wrong

B, C and D all add harmful materials directly to the soil, so they do contribute to land pollution.

Shortcut

Eutrophication is always linked with lakes and water bodies.

Common mistake

Thinking eutrophication is a land problem because the fertilizers come from farms.