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Waste Water Engineering

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

Lateral sewer
Intercepting sewer
Main sewer
House sewer

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Waste Water Engineering
The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is

0.5
0.1
0.25
0.05

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Waste Water Engineering
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called

Depressed sewer
all of these
Inverted syphon
Sag pipe

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Waste Water Engineering
In a trickling filter

Biological action is used
Both A and B
Filtration process is used
Neither A nor B

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Waste Water Engineering
Design period of 40 to 50 years is adopted for

Branch sewers
Main sewers
All listed here
Trunk sewers

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Waste Water Engineering
Hume steel pipes are

Both B and C
Steel pipes
Steel shell coated from outside with cement mortar
Steel shell coated from inside with cement mortar

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