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Waste Water Engineering

Waste Water Engineering
The sewage treatment in septic tanks is due to

None of these
Aerobic decomposition
Anaerobic decomposition
Parasitic decomposition

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Waste Water Engineering
Sewer pipes need be checked for

Maximum flow
Both A and B
None of these
Minimum flow

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Waste Water Engineering
If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is

200 ppm
100 ppm
150 ppm
50 ppm

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Waste Water Engineering
Kjeldahl nitrogen is a mixture of

Organic nitrogen and ammonia
Nitrogen and organic nitrogen
All listed here
Ammonia and nitrogen

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Waste Water Engineering
Inter-distance between ventilation columns in a sewer line is kept

25 to 50 m
150 m to 300 m
50 m to 100 m
100 m to 150 m

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Ground water
Surface water
Sanitary sewage
Storm sewage

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