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Waste Water Engineering

Waste Water Engineering
The water carried sewerage system removes

Industrial sewage
Domestic sewage
Storm sewage
All listed here

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Waste Water Engineering
Which one of the following resists hydrogen sulphide corrosion?

Glazed ware
R.C.C.
Glazed stone wares
Asbestos cement

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Waste Water Engineering
The factor responsible for purification of sewage in river is

Temperature
Dissolved oxygen in water
All listed here
Hydrology

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Waste Water Engineering
The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is

0.88 m
1.36 m
1.76 m
0.68 m

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Waste Water Engineering
It is customary to design a sewer for D.W.F. on the basis of

Thrice the average demand
Four times the average demand
Twice the average demand
Average demand

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Waste Water Engineering
The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is

0.25
0.5
0.1
0.05

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