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Waste Water Engineering

Waste Water Engineering
5 days-biochemical oxygen demand (BOD5) is taken at a temperature of

0°C
15°C
25°C
20°C

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

Seas
Lakes
None of these
Rivers

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Waste Water Engineering
The sewer that unloads the sewage at the point of treatment is called

Main sewer
House sewer
Outfall sewer
Branch sewer

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Waste Water Engineering
For providing an Indian type W.C., the R.C.C. slabs in the toilet portion

Should be sunk by 50 cm
Need not be sunk
Should be sunk by 20 cm
Should be kept 20 cm above the adjacent portion

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Waste Water Engineering
The settlement of a particle in sedimentation tank, is affected by

Velocity of flow
All listed here
Viscosity of water
Size and shape of solid

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Waste Water Engineering
The coagulant which is generally not used for treating the sewage, is

Alum
Chlorinated coppers
Ferric chloride
Ferric sulphate

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MORE MCQ ON Waste Water Engineering

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