Wastewater Story-Polluted Water (CBSE Class-7 Science): Questions 1 - 2 of 2

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Question number: 1

» Wastewater Story » Polluted Water » Cause of Water Pollution

MCQ▾

Question

Water is polluted from various sources such as from:

Choices

Choice (4) Response

a.

Farms

b.

Mining operations and construction work

c.

Houses, Industries

d.

All a. , b. and c. are correct

Question number: 2

» Wastewater Story » Polluted Water » Treatment of Polluted Water

MCQ▾

Question

Treatment of wastewater involves:

Choices

Choice (4) Response

a.

Chemical Processes

b.

Biological processes

c.

Physical processes

d.

All a. , b. and c. are correct

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