The addition of substances or energy forms that directly or indirectly alter the nature of the water body is called?

Civil Engineering : Waste Water Engineering - Quiz(MCQ)

Sanitation

Water treatment

Water pollution

Water contamination

Correct Answer : Water pollution

Explanation : Water pollution is the addition of substances or energy forms that directly or indirectly alter the nature of the water body in such a manner that negatively affects its legitimate uses.

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What is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of the water quality called?

Algae growth

Eutrophication

Denitrification

Nitrification

Correct Answer : Option (B) : Eutrophication

Explanation : Eutrophication is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of water quality. The untreated wastewater is rich in organic matter which demands oxygen.