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Waste Water Engineering

Waste Water Engineering
For sewers, inverted siphon is provided for

Three pipes
One pipe
Two pipes
Four pipes

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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
Industrial waste
Sanitary sewage
None of these

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Waste Water Engineering
Primary treatment of sewage consists of removal of

Large suspended organic solids
Oil and grease
Floating materials
Sand and girt

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Waste Water Engineering
The gas evolved in sewers is

Hydrogen sulphide
Carbondioxide
Methane
All of these

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

Temperature
All listed here
Dissolved oxygen in water
Hydrology

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Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

4 hours
2 hours
5 hours
3 hours

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