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Waste Water Engineering

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

67.5 cm
52.5 cm
82.5 cm
None of these

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Waste Water Engineering
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called

Depressed sewer
Sag pipe
all of these
Inverted syphon

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Waste Water Engineering
Which one of the following gases is most significant as air pollutant?

Carbondioxide
Sulphur-dioxide
Oxygen
Nitrogen

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Waste Water Engineering
Chlorination of water is done for the removal of

Hardness
Bacterias
Suspended solids
Sediments

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Waste Water Engineering
The algae dies out in the zone of

Active decomposition
Cleaner water
Recovery
Degradation

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

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

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