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Waste Water Engineering

Waste Water Engineering
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

2.45 m
2.40 m
2.30 m
2.50 m

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Waste Water Engineering
Flocculated particles do not change their

Shape
None of these
Size
Weight

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Waste Water Engineering
The normal values of over flow rates for sedimentation tanks using coagulant, ranges between

40,000 to 50,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day
80,000 to 100,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day

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Waste Water Engineering
The liquid wastes from kitchens, bath rooms and wash basins, is not called

Sewage
Liquid waste
Sullage
None of these

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Waste Water Engineering
For sewers, inverted siphon is provided for

Four pipes
Three pipes
Two pipes
One pipe

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Waste Water Engineering
The pH value of fresh sewage is usually

Equal to 7
Equal to zero
More than 7
Less than 7

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