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Waste Water Engineering

Waste Water Engineering
Chlorination of water is done for the removal of

Sediments
Bacterias
Suspended solids
Hardness

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Waste Water Engineering
For sewers, inverted siphon is provided for

Three pipes
Four pipes
One pipe
Two pipes

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Waste Water Engineering
In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

2.25
2.5
2.65
2.55

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Waste Water Engineering
The sewerage system originates from

Main sewers
Branch sewers
Lateral sewers
House sewers

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Waste Water Engineering
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains

Hydrogen sulphide
Carbon dioxide
Oxygen
Methane

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Waste Water Engineering
If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is

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

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