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Waste Water Engineering

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

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

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Waste Water Engineering
The gas which may cause explosion in sewers, is

Carbondioxide
Ammonia
Carbon monoxide
Methane

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Waste Water Engineering
With self cleansing velocity in sewers

Both silting and scouring occur at bottom
Silting occurs at bottom
Neither silting nor scouring occurs at bottom
Scouring occurs at bottom

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Waste Water Engineering
Acid regression stage of sludge digestion at a temperature 21°C extends over a period of

15 days
60 days
30 days
90 days

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Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Siphon spill way
None of these
Overflow weir
Leaping weir

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

Sediments
Bacterias
Suspended solids
Hardness

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