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Waste Water Engineering

Waste Water Engineering
A rain sanitary sewer is constructed to carry

Sanitary sewage
Surface water
Ground water
Storm sewage

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Waste Water Engineering
To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is

0.50 m/sec
0.60 m/sec
0.75 m/sec
0.70 m/sec

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Waste Water Engineering
If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is

6 hours
4 hours
2 hours
8 hours

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Waste Water Engineering
In olden days the type of section adopted in trunk and out fall sewers was

Parabolic shaped
Circular shaped
Horse shoe shaped
Egg shaped

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Waste Water Engineering
In a sludge tank, the gas mainly produced, is

Nitrogen
Hydrogen
Oxygen
Carbon dioxide

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Waste Water Engineering
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

10 ppm
5 ppm
3 ppm
4 ppm

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MORE MCQ ON Waste Water Engineering

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