Wastewater Story-Water, Our Lifeline (CBSE (Central Board of Secondary Education- Board Exam) Class-7 Science): Questions 1 - 4 of 4

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Question number: 1

» Wastewater Story » Water, Our Lifeline » Cleaning of Water

MCQ▾

Question

Cleaning water is the process of removing:

Choices

Choice (4) Response

a.

Suspended solids and gases from water

b.

Undesirable chemicals from water

c.

Biological contaminants from water

d.

All a. , b. and c. are correct

Question number: 2

» Wastewater Story » Water, Our Lifeline » Waste Water

MCQ▾

Question

Water flowing down the drain is called as:

Choices

Choice (4) Response

a.

Waste water

b.

Sewage

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 3

» Wastewater Story » Water, Our Lifeline » Clean Water

MCQ▾

Question

Scarcity of clean potable water is due to:

Choices

Choice (4) Response

a.

Industrial development

b.

Population growth

c.

Pollution

d.

All a. , b. and c. are correct

Question number: 4

» Wastewater Story » Water, Our Lifeline » Impurities in Water

MCQ▾

Question

Different types of impurities present in water are:

Choices

Choice (4) Response

a.

Nutrients, Bacteria

b.

Inorganic impurities

c.

Organic impurities

d.

All a. , b. and c. are correct

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