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Waste Water Engineering

Waste Water Engineering
The standard B.O.D. of water is taken for

2 days
5 days
1 day
3 days

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Waste Water Engineering
The effluent of a septic tank is

None of these
As good as that from a complete treatment
Fit for discharge into any open drain
Foul and contains dissolved and suspended solids

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Waste Water Engineering
Sludge banks are formed if sewage is disposed of in

Lakes
Seas
None of these
Rivers

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Waste Water Engineering
The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is

1 in 503 upward
1 in 100 upward
1 in 100 downward
1 in 500 upward

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Waste Water Engineering
The screens are fixed

At an angle 30° to 60° to the direction of flow
Parallel to the direction of flow
None of these
Perpendicular to the direction of flow

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Waste Water Engineering
In SI units the power of sound is represented in

Watts
Joules
Kgs
Newtons

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