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Waste Water Engineering

Waste Water Engineering
In sewage, the solids in mg per litre is

1500 to 2000
500 to 1000
100 to 500
1000 to 1500

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Waste Water Engineering
For large sewers, maximum distance between manholes may be

50 m
200 m
100 m
300 m

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Waste Water Engineering
The factor responsible for purification of sewage in river is

Temperature
All listed here
Dissolved oxygen in water
Hydrology

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Waste Water Engineering
The most efficient cross-section of sewers in a combined sewerage system is

Rectangular
Parabolic
New egged
Circular

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Waste Water Engineering
If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is

80 cm
90 cm
50 cm
100 cm

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Waste Water Engineering
In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?

225 mm dia
100 mm dia
150 mm dia
All of these

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