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Waste Water Engineering

Waste Water Engineering
During purification process of sewage the gas given off, is

Carbon dioxide
All listed here
Hydrogen
Ammonia

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Waste Water Engineering
In areas where rainy season is limited to a few months, the type of sewerage system recommended is

Separate system
Combined system
Partially separate system
None of these

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Waste Water Engineering
In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is

D/3
D/4
D/2
D/1

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

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

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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
Kinchling
Frubling
Lloyd Davis

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Waste Water Engineering
For efficient working of a sewer, it must be ensured that

A maximum velocity of 0.90 m/sec, is maintained at its maximum flow
Neither (A) nor (B)
Both (A) and (B)
Minimum velocity of 0.45 m/sec, is maintained at its minimum flow

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