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Waste Water Engineering

Waste Water Engineering
A rainfall may be classified as acidic if its pH value is less or equal to

6.5
6
5
7

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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 500 upward
1 in 100 upward
1 in 100 downward

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Waste Water Engineering
House connections to the laterals is generally made by

P.C.C.
Glazed stonewares
R.C.C.
Cast iron

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Waste Water Engineering
In a trickling filter

Filtration process is used
Biological action is used
Neither A nor B
Both A and B

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Waste Water Engineering
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

All listed here
Frubling
Lloyd Davis
Kinchling

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Waste Water Engineering
If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

None of these
1 in 60
1 in 120
1 in 100

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