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Waste Water Engineering

Waste Water Engineering
Imhoff cone is used to determine

Dissolved solids
Suspended solids
Settleable solids
None of these

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Waste Water Engineering
In very first stage of decomposition of the organic matter in sewage

Ammonia is formed
Carbondioxide is formed
Nitrites are formed
Nitrates are formed

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Waste Water Engineering
For design of sewers, percentage of sewage discharge is assumed

75 to 80%
65 to 70%
0.85
70 to 75%

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Waste Water Engineering
The ratio of minimum hourly flow to the average flow of sewage is

43832
43833
43894
43834

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Waste Water Engineering
Cement concrete sewers are only suitable if non-scouring velocity is between

3.0 to 4.0 m/sec
3.5 to 4.5 m/sec
4.5 to 5.5 m/sec
2.5 to 3.0 m/sec

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Waste Water Engineering
The formula V = (1/n) r2/3

Bazin’s formula
Manning’s formula
Kutter’s formula
Chezy’s formula

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MORE MCQ ON Waste Water Engineering

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