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Waste Water Engineering

Waste Water Engineering
The sewer pipe which carries sewage from a building for immediate disposal is

Lateral sewer
Main sewer
Intercepting sewer
House sewer

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Waste Water Engineering
The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called

Windrow
Plateau
None of these
A heap

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Waste Water Engineering
The algae dies out in the zone of

Recovery
Cleaner water
Degradation
Active decomposition

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Waste Water Engineering
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is

0.05554 cumec
0.05552 cumec
0.0556 cumec
0.05556 cumec

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Waste Water Engineering
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known

Sewer outfall
House sewer
Lateral sewer
Branch sewer

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Waste Water Engineering
If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is

100 ppm
50 ppm
200 ppm
150 ppm

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