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UPSC Civil Service Exam Questions - Engineering

Q1:

Which one of the following statements is NOT correct ?

A In combined sewerage system, one set of sewers is laid for both sanitary sewage and storm water.

B In separate system, the design of sewage system is economical

C In separate system, self cleaning velocities are not available and occasional flushing is required.

D As the sewage is diluted by storm water in combined sewage system, cost of treatment is low.

ANS:C - In separate system, self cleaning velocities are not available and occasional flushing is required.

C is the right answer. I agree with the given answer.