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Waste Water Engineering

Waste Water Engineering
The quantity of liquid waste which flows in sewers during the period of rainfall, is known

Storm sewage
Industrial waste
None of these
Sanitary sewage

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Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

d = 0.2 B
d = 0.5 B
B = 0.2 d
B = 0.5 d

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Waste Water Engineering
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

1.065
1.095
1.085
1.075

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Waste Water Engineering
Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to

Carbonaceous demand
First stage demand
All of these
Initial demand

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Waste Water Engineering
The pH value of fresh sewage is usually

Equal to 7
Equal to zero
More than 7
Less than 7

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

Centrifugal pump
Reciprocating pump
Pneumatic ejector
None of these

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