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Waste Water Engineering

Waste Water Engineering
During purification process of sewage the gas given off, is

All listed here
Ammonia
Hydrogen
Carbon dioxide

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Waste Water Engineering
The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is

3
1.5
2
4

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Waste Water Engineering
The sewer which received discharge from two or more main sewers, is known as

A main sewer
A trunk sewer
An outfall sewer
An intercepting sewer

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Waste Water Engineering
The sewage treatment units in which anaerobic decomposition of organic matter is used, are called

Sludge sedimentation tanks
None of these
Imhoff tanks
Trickling filters

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

200 m
300 m
100 m
50 m

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Waste Water Engineering
The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is

1.5
2
3
4

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