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The number of separate systems in a sewer area are?

(a) 2

(b) 3

(c) 4

(d) 6

This question was posed to me during an online interview.

Query is from Water Carriage System in chapter Water Supply for Building, Collection and Conveyance of Sewage, Waste Water Flow Rate of Environmental Engineering

1 Answer

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Best answer
Right answer is (a) 2

For explanation: There are two separate systems of sewer, one for the conveyance of foul smell and other in the rain water.

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