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Waste Water Engineering

Waste Water Engineering
The liquid wastes from kitchens, bath rooms and wash basins, is not called

None of these
Sewage
Sullage
Liquid waste

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Waste Water Engineering
Fresh sewage may become stale in

Six hours
Three to four hours
One hour
Two to three hours

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Waste Water Engineering
The detention period for plain sedimentation water tanks, is usually

16 to 24 hours
8 to 16 hours
24 to 36 hours
4 to 8 hours

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Waste Water Engineering
The self-cleansing velocity of water flowing through pipe lines, is

0.5 metre/sec
0.25 metre/sec
1 metre/sec
2 metres/sec

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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
For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is

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

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