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Waste Water Engineering

Waste Water Engineering
Which one of the following part of human body withstands minimum radiation?

Ovaries/testis
Kidneys
Eyes
Thyroid

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Waste Water Engineering
The standard B.O.D. of water is taken for

3 days
2 days
1 day
5 days

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Waste Water Engineering
depends upon The Chezy’s constant C in the formula V = C

Size of the sewer
Roughness of sewer surface
Shape of the sewer
All listed here

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Waste Water Engineering
For design purposes, the normal rate of infiltration of ground water into the sewer, is

500 litres/km/cm
1000 litres/km/cm
2000 litres/km/cm
1500 litres/km/cm

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Waste Water Engineering
In sewage having fully oxidised organic matter, the nitrogen exists in the form of

Nitrates
Aluminoid nitrogen
Nitrites
Free ammonia

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Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Overflow weir
None of these
Siphon spill way
Leaping weir

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