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Waste Water Engineering

Waste Water Engineering
In a sludge tank, the gas mainly produced, is

Hydrogen
Oxygen
Nitrogen
Carbon dioxide

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

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

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Waste Water Engineering
The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is

204 cu.m
212 cu.m
216 cu.m
208 cu.m

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Waste Water Engineering
House connections to the laterals is generally made by

P.C.C.
Glazed stonewares
R.C.C.
Cast iron

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Waste Water Engineering
pH value of sludge during alkaline regression stage, is

More than 7
More than 6
Less than 6
Less than 7

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Waste Water Engineering
For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is

16 m
24 m
20 m
30 m

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