NCERT Class 7 Science-Wastewater Story[Waste Water Treatment Plant] [NCERT Based General Studies (GS)]: Questions 1 - 7 of 7

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Question 1

Question MCQ▾

In secondary clarifier sludge is used as:

Choices

Choice (4)Response

a.

Manure

b.

Fertilizers

c.

Construction materials

d.

All a., b. and c. are correct

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Question 2

Question MCQ▾

Processes of sludge treatment are:

Choices

Choice (4)Response

a.

Solid Composting, Incinerating

b.

Incinerating, Dewatering, solid composting

c.

Dewatering, Solid composting

d.

All a., b. and c. are correct

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Question 3

Question MCQ▾

Bar screen removes the:

Choices

Choice (4)Response

a.

Sludge

b.

Coarse and floating solids from the sewage

c.

Grit and sand removal

d.

Question does not provide sufficient data or is vague

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Question 4

Question MCQ▾

In the wastewater treatment plant wastewater is passed after screening into the:

Choices

Choice (4)Response

a.

Grit and sand removal tank

b.

Sedimentation tank

c.

Aeration

d.

Question does not provide sufficient data or is vague

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Question 5

Question MCQ▾

Primary water clarifier is:

Choices

Choice (4)Response

a.

Grit chambers

b.

Sedimentation tanks

c.

Bar Screen

d.

All of the above

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Question 6

Question MCQ▾

Pumping of air in clarified water is called as the:

Choices

Choice (4)Response

a.

Aerobic bacteria

b.

Aeration

c.

Biogas

d.

All of the above

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Question 7

Question MCQ▾

Organic matter settled down at the base of sedimentation tank is called as:

Choices

Choice (4)Response

a.

Slush

b.

Sludge

c.

Contaminant

d.

Both a. and b. are correct

Edit