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Waste Water Engineering

Waste Water Engineering
If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is

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

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Storm sewage
Surface water
Ground water
Sanitary sewage

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Waste Water Engineering
In SI units the power of sound is represented in

Kgs
Joules
Newtons
Watts

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Waste Water Engineering
Dried sewage after treatment is used as

Base material for paints
Fertilizer
Building material
Chemical for lowering B.O.D.

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Waste Water Engineering
In sewers designed with self cleansing velocity,

Both silting and scouring occur at the bottom
Neither silting nor scouring occurs at the bottom
The bottom is silted
The bottom is scoured

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Waste Water Engineering
The sewer which resists sulphide corrosion, is

R.C. sewer
Brick sewer
Cast iron sewer
Lead sewer

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