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Waste Water Engineering

Waste Water Engineering
Which one of the following gases is most significant as air pollutant?

Carbondioxide
Nitrogen
Sulphur-dioxide
Oxygen

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Waste Water Engineering
For house drainage minimum gradient is

1 in 400
1 in 60
1 in 80
1 in 10

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Waste Water Engineering
The formula V = (1/n) r2/3

Chezy’s formula
Kutter’s formula
Bazin’s formula
Manning’s formula

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Waste Water Engineering
Pathogens (or pathogenic bacterias) in water may cause

Dysentery
Typhoid
Cholera
All listed here

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Waste Water Engineering
The use of coarse screens for the disposal of sewage, may be dispensed with by

Both A and B
Comminutor
Shredder
Neither A nor B

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Waste Water Engineering
The most widely used pump for lifting sewage is

Reciprocating pump
Centrifugal pump
Pneumatic ejector
Air pressure pump

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