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Waste Water Engineering

Waste Water Engineering
Imhoff cone is used to determine

None of these
Suspended solids
Dissolved solids
Settleable solids

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Waste Water Engineering
The grit and silt of the grit chambers, may not be used for

Concreting
Both A and B
Neither A nor B
Raising low lying areas by dumping

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Waste Water Engineering
In a trickling filter

Biological action is used
Neither A nor B
Filtration process is used
Both A and B

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Waste Water Engineering
The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is

45 m
30 m
20 m
75 m

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Waste Water Engineering
Chlorination of water is done for the removal of

Bacterias
Hardness
Sediments
Suspended solids

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Waste Water Engineering
The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is

d (0.785d + 0.011H)/Q
d² (0.011d + 0.785H)/Q
d (0.022d + 0.085H)/Q
d (0.285d + 0.011H)/Q

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