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Waste Water Engineering

Waste Water Engineering
The following is the physical characteristic of sewage

All listed here
Turbidity
Odour
Colour

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Waste Water Engineering
The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is

1 in 100 upward
1 in 100 downward
1 in 500 upward
1 in 503 upward

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Waste Water Engineering
¾th or ¼th extra space is left in sewer pipes at maximum discharge for

All listed here
Large scale infiltration of storm water
Unexpected increase in population
Low estimates of the average and maximum flows

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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 pH value of sewage is determined with the help of

None of these
Turbid meter
Potentiometer
Imhoff Cone

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Waste Water Engineering
Clogging of sewers, is caused due to

Low discharge
Silting
Greasy and oily matters
All of these

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