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Waste Water Engineering

Waste Water Engineering
In septic tanks, decomposition of organic bacteria, is done by

Both types of bacterias
Anaerobic bacteria
None of these
Aerobic bacteria

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Waste Water Engineering
The rate of accumulation of sludge per person per year, is

15 litres
20 litres
25 litres
10 litres

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

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Waste Water Engineering
During purification process of sewage the gas given off, is

Carbon dioxide
All listed here
Ammonia
Hydrogen

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Waste Water Engineering
A sewer running partially full and hurried with back filled, fails in compression due to

Weight of the back fill
Weight of the pipe
Superimposed traffic loads
All listed here

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Waste Water Engineering
The effluent of a septic tank is

None of these
As good as that from a complete treatment
Fit for discharge into any open drain
Foul and contains dissolved and suspended solids

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MORE MCQ ON Waste Water Engineering

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