Pollution of Air and Water [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 6 of 17

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Question 1

Question MCQ▾

Corrosion of marble of the monuments due to acid rain is called as:

Choices

Choice (4)Response

a.

Acid rain

b.

Yellowing of the marble

c.

Marble cancer

d.

None of the above

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Question 2

Question MCQ▾

Different methods used to purify water are:

Choices

Choice (4)Response

a.

Use the physical method of removing impurities

AND

Ultraviolet rays

b.

Chlorination

c.

Boiling

d.

All a., b. and c. are correct

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Question 3

Question MCQ▾

Water treatment plant should be installed in all:

Choices

Choice (4)Response

a.

Companies

b.

Houses

c.

Industrial areas

d.

Question does not provide sufficient data or is vague

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Question 4

Question MCQ▾

Man-Made resources which lead to air pollution are:

Choices

Choice (4)Response

a.

Urbanization

AND

Invention of automobiles

b.

Overpopulation, deforestation

c.

Industrialization

d.

All a., b. and c. are correct

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Question 5

Question MCQ▾

Water treatment process can be categorized as:

Choices

Choice (4)Response

a.

Domestic water treatment

b.

Industrial water treatment

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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Question 6

Question MCQ▾

Green House Gases are:

Choices

Choice (4)Response

a.

Ozone

b.

Water Vapours, Methane

c.

Carbon dioxide, nitrogen oxide

d.

All a., b. and c. are correct

Edit