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Waste Water Engineering

Waste Water Engineering
Fresh sewage is generally

Highly decomposed
Alkaline
A source of objectionable odour
Acidic

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Waste Water Engineering
The flow velocity in detritus tanks is

None of these
0.05 m/sec
1.25 m/sec
0.09 m/sec

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Waste Water Engineering
The detention period for plain sedimentation water tanks, is usually

24 to 36 hours
4 to 8 hours
16 to 24 hours
8 to 16 hours

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Waste Water Engineering
The most widely used pump for lifting sewage is

Pneumatic ejector
Reciprocating pump
Centrifugal pump
Air pressure pump

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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

1.085
1.095
1.065
1.075

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Waste Water Engineering
The intensity of rain is expressed in

cm/hour
cm/minute
cm/day
None of these

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