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Waste Water Engineering

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

Hydrology
Dissolved oxygen in water
Temperature
All listed here

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Waste Water Engineering
Rate of flow of sewage is generally assumed

At 150 litres per capita
Equal to the rate of water supply
Less than the rate of water supply
More than the rate of water supply

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Waste Water Engineering
The following is the physical characteristic of sewage

Colour
All listed here
Odour
Turbidity

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Waste Water Engineering
Sewer pipes need be checked for

Both A and B
Minimum flow
None of these
Maximum flow

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Waste Water Engineering
A manhole is generally provided at each

Junction
Change of gradient
All of these
Bend

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Waste Water Engineering
The effluent of a septic tank is

None of these
As good as that from a complete treatment
Foul and contains dissolved and suspended solids
Fit for discharge into any open drain

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