The harmful and unwanted substances which degrade the quality of water are called as ________.

water pollutants

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soil pollutants

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air pollutants

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none of the above

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Solution

The correct option is A water pollutants
Any external substance which changes the natural qualities of water is known as a water pollutant. These can be chemical or biological. These pollutants harm the natural quality of water causing water pollution.
So, the correct option is $A$

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Similar questions

State whether the given statement is true or false:

The presence of harmful or objectionable material in sufficient quantity in water to measurably degrade its quality is called as water pollution.

Question 21
Fill in the blanks with the help of words given in bracket after each sentence.
(a) When air is contaminated by___ substances which have a ___ effect on both the ___ and ___, it is referred to as ___. (air pollution, harmful, living, unwanted, non-living, pollutants).
(b) Many ___ are responsible for causing ___ pollution. Petroleum ___ are a major source of ___ pollutants like ___ and ___. (sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air).
(c) While ___ your teeth, leaving the ___ running may waste several ___ of water. (tap, litres, brushing, washing, drops)
(d) Water which is suitable for ___ is called ___ water. (washing, bathing, drinking, potable, soft).
(e) Water which looks clean still has disease carrying ___and ___ impurities. (insects, microorganism, particles, dissolved, harmful).

Q. Fill in the blanks with the help of words given in bracket after each sentence.

(a) When air is contaminated by ________ substances which have a ________ effect on both the ________ and ________, it is referred to as ________.

(air pollution, harmful, living, unwanted, non-living, pollutants).

(b) Many ________ are responsible for causing ________ pollution. Petroleum ________ are a major source of ________ pollutants like ________ and ________.

(sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air)

(tap, liters, brushing, washing, drops)

(d) Water which is suitable for _________ is called ________ water.

(washing, bathing, drinking, potable, soft)

(e) Water which looks clean still has disease-carrying ________ and ________ impurities.

(insects, microorganisms, particles, dissolved, harmful).

Question 21
Fill in the blanks with the help of words given in bracket after each sentence.
(a) When air is contaminated by___ substances which have a ___ effect on both the ___ and ___, it is referred to as ___. (air pollution, harmful, living, unwanted, non-living, pollutants).
(b) Many ___ are responsible for causing ___ pollution. Petroleum ___ are a major source of ___ pollutants like ___ and ___. (sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air).
(c) While ___ your teeth, leaving the ___ running may waste several ___ of water. (tap, litres, brushing, washing, drops)
(d) Water which is suitable for ___ is called ___ water. (washing, bathing, drinking, potable, soft).
(e) Water which looks clean still has disease carrying ___and ___ impurities. (insects, microorganism, particles, dissolved, harmful).

Air is contaminated by unwanted substances that have harmful effects on both living and non-living objects. This is mainly called as _____________.

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The harmful and unwanted substances which degrade the quality of water are called as ________.

The correct option is A water pollutantsAny external substance which changes the natural qualities of water is known as a water pollutant. These can be chemical or biological. These pollutants harm the natural quality of water causing water pollution.So, the correct option is A

The correct option is A water pollutants
Any external substance which changes the natural qualities of water is known as a water pollutant. These can be chemical or biological. These pollutants harm the natural quality of water causing water pollution.
So, the correct option is $A$