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Water Management

Underground p...

Question

Underground pipes that carry waste water are called
(a) tanks.
(b) sewage.
(c) sewers.
(d) drains.

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Solution

(d) drains
Underground pipes that carry wastewater are called drains.

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Similar questions

Q. Waste water that flows out from our homes is called ________________.
(a) garbage
(b) sludge
(c) sewage sewer
(d) sewer

Q. Match the items in Column A with the items in Column B:

Column A	Column B
1. Tertiary treatment	(a) Mechanical process
2. Sewers	(b) Biological process
3. Waste water	(c) Scum
4. Secondary treatment	(d) Sewage
5. Primary treatment	(e) Pipes carrying sewage
	(f) Chemical process

Q. Match the following correctly [3 MARKS]

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Q. Write True (T) of False (F) against the following statements in the given brackets:
1. Primary treatment of waste water is a mechanical process. ( )
2. Scum is removed with a skimmer. ( )
3. Septic tank is an example of on-site sewage disposal system. ( )
4. Aeration of clarified water kills disease-causing microbes. ( )
5. Sewer pipes are made up of case iron. ( )

Q. Which of the following is not a correct step towards preventing water pollution?
(a) throwing waste paper into drains
(b) developing good sanitation system in rural areas
(c) disposing waste oil in your kitchen drains
(d) treatment of sewage before it is released into rivers

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