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Waste Water Engineering

Waste Water Engineering
For house drainage minimum gradient is

1 in 80
1 in 10
1 in 60
1 in 400

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Waste Water Engineering
Flocculated particles do not change their

Size
None of these
Shape
Weight

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Waste Water Engineering
hydraulically equivalent, the relationship which holds good, is

D2/3 = 4 b2/3
D3/2 = 4 b3/2
D3/8 = 4 b3/8
D8/3 = 4 b8/3

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Waste Water Engineering
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is

213.5 cm/sec
500 cm/sec
313.5 cm/sec
413.5 cm/sec

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Waste Water Engineering
The drop man holes are generally provided in sewers for

Industrial areas
Hilly town ships
Cities in plains
Large town ships

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Waste Water Engineering
A well oxidized sewage contains nitrogen mainly as

Nitrites
None of these
Nitrates
Free ammonia

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MORE MCQ ON Waste Water Engineering

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