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Pollutants and Their Classification

Nutrient enri...

Question

Nutrient enrichment of water bodies causes

A

Stratification

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B

None of the above

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C

Succession

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D

Eutrophication

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Solution

The correct option is D
Eutrophication

Phosphorus and nitrates present in domestic sewage act as nutrients and promote the growth of algae which form a cover on the water surface. This process is called eutrophication.

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Similar questions

Q. 20. Which of the following statements are true with respect to eutrophication?
i) Eutrophication is the nutrient enrichment of a water body
ii) Reducing water pollution can aid in controlling eutrophication.
iii) Aquaculture may further increase eutrophication of water bodies
Options:

Q. Assertion :Cultural eutrophication is nutrient enrichment of water bodies due to human activities like passage of sewage, industrial effluents, etc. Reason: The prime contaminants from sewage and industrial effluents are nitrates and phosphates, which act as plant nutrients and overstimulate the growth of algae.

Q. Match and find the correct combination.

(a)	Eutrophication	(i)	Rise in sea level
(b)	Biomagnification	(ii)	Water Hyacinth
(c)	Terror of Bengal	(iii)	Increase in quantity of pollutant at successive trophic levels
(d)	Green house effect	(iv)	Enrichment with nutrients

Q. What causes eutrophication in water bodies?

Q. Eutrophication causes a hypoxic condition in water bodies.

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Pollutants and Their Classification

Standard XII Chemistry

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