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

Access detailed explanations (illustrated with images and videos) to 469 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. 3 Year Validity- Access Unlimited Times on Unlimited Devices.

View Sample Explanation or View Features.

Rs. 300.00 -OR-

How to register? Already Subscribed?

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

Edit

Question 2

Question MCQ▾

Different methods used to purify water are:

Choices

Choice (4)Response

a.

Boiling

b.

Use the physical method of removing impurities

AND

Ultraviolet rays

c.

Chlorination

d.

All b., c. and a. are correct

Edit

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

Edit

Question 4

Question MCQ▾

Man-Made resources which lead to air pollution are:

Choices

Choice (4)Response

a.

Industrialization

b.

Urbanization

AND

Invention of automobiles

c.

Overpopulation, deforestation

d.

All b., c. and a. are correct

Edit

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

Edit

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