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Waste Water Engineering

Waste Water Engineering
The self-cleansing velocity of water flowing through pipe lines, is

0.5 metre/sec
1 metre/sec
2 metres/sec
0.25 metre/sec

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Waste Water Engineering
In very first stage of decomposition of the organic matter in sewage

Nitrites are formed
Ammonia is formed
Carbondioxide is formed
Nitrates are formed

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Waste Water Engineering
The drop man holes are generally provided in sewers for

Hilly town ships
Large town ships
Industrial areas
Cities in plains

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Waste Water Engineering
Depletion of ozone layer in the outer atmosphere may cause

Skin cancer
Lung cancer
Heart disorder
Bronchitis

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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?

None of these
Centrifugal pump
Reciprocating pump
Pneumatic ejector

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Waste Water Engineering
The underground sewers are more subjected to

Compressive force
Shearing force
Bending force
Tensile force

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