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Waste Water Engineering

Waste Water Engineering
Pick up the incorrect size of stone ware sewers

67.5 cm
82.5 cm
None of these
52.5 cm

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Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Siphon spill way
Leaping weir
Overflow weir
None of these

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

Hydrogen
Carbon dioxide
Nitrogen
Oxygen

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Waste Water Engineering
The presence of free ammonia in sewage, is detected by

Phenol-di-sulphuric acid
Adding potassium permanganate
Adding sulphuric acid
Boiling

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Waste Water Engineering
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is

[(100 – P1)/(100 + P2)] V1
[(100 – P1)/(100 – P2)] V1
[(100 + P2)/(100 – P1)] V1
[(100 + P1)/(100 – P2)] V1

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Waste Water Engineering
For detecting the nitrites in the sewage, the matching colour may be developed by adding

None of these
Sulphuric acid and napthamine
Phenol-di -sulphuric acid potassium hydroxide
Potassium permanganate

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