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Waste Water Engineering

Waste Water Engineering
The sewer pipe which carries sewage from a building for immediate disposal is

Main sewer
Intercepting sewer
Lateral sewer
House sewer

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Waste Water Engineering
Antisyphonage pipe is fitted

On manholes
With a W.'trap
At the end of septic tanks
At the beginning of sewer line

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Waste Water Engineering
The sewer which resists sulphide corrosion, is

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

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Waste Water Engineering
The most efficient cross-section of sewers in a combined sewerage system is

Circular
Rectangular
New egged
Parabolic

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Waste Water Engineering
In sewers the highest non-scouring velocity is achieved in

Cast iron sewers
Glazed bricks sewers
Cement concrete sewers
Stone ware sewers

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

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

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