Waste Water Engineering MCQ Questions & Answers

A) Width of the tank is normally kept about 6 m B) Length of the tank is normally kept 4 to 5 times the width C) Maximum horizontal flow velocity is limited to 0.3 m/minute D) All the above

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Answer: Option D

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The use of coarse screens for the disposal of sewage, may be dispensed with by

A) Comminutor B) Shredder C) Both A and B D) Neither A nor B

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Answer: Option C

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In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?

A) 100 mm dia B) 150 mm dia C) 225 mm dia D) All of these

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Answer: Option C

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For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed

A) 1.5 B) 2.0 C) 2.5 D) 3.0

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Answer: Option A

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For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed

A) 1.5 B) 2.0 C) 2.5 D) 3.0

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Answer: Option B

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Pick up the correct statement from the following:

A) Indore method of composting involves decomposition under aerobic conditions B) Bangalore method of composting involves decomposing under anaerobic conditions C) Fully stabilised refuse by the Bangalore method of compositing is a powdery mass called humus D) all of these

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Answer: Option D

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Pick up the correct statement from the following:

A) Inlets are provided on the road surface at the lowest point for draining rain water B) Inlets are generally provided at an interval of 30 m to 60 m along straight roads C) Inlets having horizontal openings, are called horizontal inlets D) All the above

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Answer: Option D

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The disintegrating pump in which solid matter is broken up before passing out, is

A) Centrifugal pump B) Reciprocating pump C) Pneumatic ejector D) None of these

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Answer: Option A

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Hume steel pipes are

A) Steel pipes B) Steel shell coated from inside with cement mortar C) Steel shell coated from outside with cement mortar D) Both B and C

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Answer: Option D

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Waste Water Engineering MCQ Questions & Answers | Civil Engineering