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Waste Water Engineering

Waste Water Engineering
1000 kg of sewage contains

0.225 kg in solution
Both A and C of above
0.112 kg in solution
0.112 kg in suspension

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Waste Water Engineering
The sewage treatment in septic tanks is due to

Aerobic decomposition
Anaerobic decomposition
None of these
Parasitic decomposition

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.25 D
1.15 D
1.75 D
1.5 D

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Waste Water Engineering
The pH value of fresh sewage is usually

Equal to zero
Less than 7
Equal to 7
More than 7

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

All listed here
Temperature
Dissolved oxygen in water
Hydrology

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Waste Water Engineering
Disposal to sewage in large cities, is done in

Oxidation
Purification
Dilution
Irrigation

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