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Waste Water Engineering

Waste Water Engineering
For sewers, inverted siphon is provided for

Three pipes
One pipe
Four pipes
Two pipes

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Waste Water Engineering
If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is

4 hours
8 hours
2 hours
6 hours

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

Intercepting sewer
House sewer
Main sewer
Lateral sewer

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Waste Water Engineering
Self-cleansing velocity is

Velocity of water in a pressure filter
Velocity of water at flushing
Velocity at dry weather flow
Velocity at which no accumulation remains in the drains

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Waste Water Engineering
The coagulant which is generally not used for treating the sewage, is

Chlorinated coppers
Alum
Ferric chloride
Ferric sulphate

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Waste Water Engineering
Which one of the following resists hydrogen sulphide corrosion?

Glazed ware
Glazed stone wares
Asbestos cement
R.C.C.

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