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Waste Water Engineering

Waste Water Engineering
For trunk and out-fall, the type of sewers generally used, is

Horse shoe shaped
Parabolic shaped
Standard egg shaped
Circular shaped

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

3 ppm
5 ppm
10 ppm
4 ppm

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Waste Water Engineering
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

None of these
1 in 60
1 in 100
1 in 120

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Waste Water Engineering
The drop man holes are generally provided in sewers for

Hilly town ships
Cities in plains
Industrial areas
Large town ships

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Waste Water Engineering
Inter-distance between ventilation columns in a sewer line is kept

150 m to 300 m
50 m to 100 m
100 m to 150 m
25 to 50 m

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Waste Water Engineering
In areas where rainy season is limited to a few months, the type of sewerage system recommended is

None of these
Separate system
Partially separate system
Combined system

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