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Waste Water Engineering

Waste Water Engineering
Chlorination of water is done for the removal of

Sediments
Hardness
Suspended solids
Bacterias

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Waste Water Engineering
Facultative bacteria survive in

Both cases A and B
Neither A nor B
The absence of oxygen
The presence of oxygen

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Waste Water Engineering
Dry water flow in a combined sewer, is

Industrial sewage
Domestic sewage
Storm water
Inclusive of domestic and industrial sewage but excludes storm water

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Waste Water Engineering
Setting out the alignments of sewers may start from

City
Tail end
Any point
Out-fall

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

Pneumatic ejector
Air pressure pump
Centrifugal pump
Reciprocating pump

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Waste Water Engineering
The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is

45 m
30 m
20 m
75 m

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