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Waste Water Engineering

Waste Water Engineering
Disposal to sewage in large cities, is done in

Irrigation
Oxidation
Dilution
Purification

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Waste Water Engineering
In sewers the highest non-scouring velocity is achieved in

Cast iron sewers
Cement concrete sewers
Stone ware sewers
Glazed bricks sewers

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Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

5 hours
3 hours
4 hours
2 hours

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Waste Water Engineering
The coagulant which is generally not used for treating the sewage, is

Ferric sulphate
Ferric chloride
Chlorinated coppers
Alum

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Waste Water Engineering
The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known

Chemical Oxygen Demand (C.O.D.)
Bio-Chemical Oxygen Demand (B.O.D.)
None of these
Dissolved Oxygen (D.O.)

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Waste Water Engineering
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of

120 cm
100 cm
140 cm
160 cm

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MORE MCQ ON Waste Water Engineering

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