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Waste Water Engineering

Waste Water Engineering
Disposal to sewage in large cities, is done in

Oxidation
Irrigation
Dilution
Purification

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Waste Water Engineering
The sewer pipe which carries sewage from a building for immediate disposal is

House sewer
Main sewer
Lateral sewer
Intercepting sewer

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Waste Water Engineering
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?

Centrifugal pump
Pneumatic ejector
None of these
Reciprocating pump

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Waste Water Engineering
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is

313.5 cm/sec
500 cm/sec
413.5 cm/sec
213.5 cm/sec

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Waste Water Engineering
In sewage, the solids in mg per litre is

1000 to 1500
500 to 1000
100 to 500
1500 to 2000

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Waste Water Engineering
The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is

25 cm
40 cm
20 cm
50 cm

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