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Waste Water Engineering

Waste Water Engineering
The most efficient cross section of sewers in a separate sewerage system is

Rectangular
New egged
Parabolic
Circular

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Waste Water Engineering
In normal conditions, the period for sludge digestion, is

20 days
10 days
30 days
60 days

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Waste Water Engineering
Removal of oil and grease from sewage, is known

Screening
Skimming
None of these
Filtration

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Waste Water Engineering
A sewer running partially full and hurried with back filled, fails in compression due to

All listed here
Superimposed traffic loads
Weight of the back fill
Weight of the pipe

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

Storm sewage
None of these
Industrial waste
Sanitary sewage

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Waste Water Engineering
In sewage having fully oxidised organic matter, the nitrogen exists in the form of

Nitrites
Nitrates
Aluminoid nitrogen
Free ammonia

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