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Waste Water Engineering

Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

Kuichling
Lloyd David
All of these
Fruhling

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Waste Water Engineering
The water carried sewerage system removes

Storm sewage
Domestic sewage
Industrial sewage
All listed here

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Waste Water Engineering
As compared to fresh river water, sea water contains oxygen

10% less
20% more
10% more
20% less

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Waste Water Engineering
For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed

2
3
1.5
2.5

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

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Waste Water Engineering
Lead acetate test in sewer manhole is done to test the presence of

Hydrogen sulphide
Methane gas
Diesel vapours
Carbondioxide gas

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