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Waste Water Engineering

Waste Water Engineering
Fresh sewage may become stale in

One hour
Two to three hours
Three to four hours
Six hours

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Waste Water Engineering
Flocculated particles do not change their

Size
Shape
Weight
None of these

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.25 D
1.5 D
1.75 D
1.15 D

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Waste Water Engineering
The small sewers are cleaned by

Cane rodding
Flushing
Wooden pills
None of these

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Waste Water Engineering
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

1.085
1.065
1.095
1.075

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Waste Water Engineering
In trickling filter, B.O.D. is reduced to

80 to 90%
30 to 40%
60 to 80%
40 to 60%

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MORE MCQ ON Waste Water Engineering

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