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Environmental Engineering

Environmental Engineering
The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of

100 mg/liter
1 mg/liter
1000 mg/liter
10 mg/liter

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Environmental Engineering
The minimum and maximum diameters of sewers shall preferably be

15 cm and 100 cm
60 cm and 300 cm
15 cm and 300 cm
30 cm and 450 cm

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Environmental Engineering
The maximum efficiency of BOD removal is achieved in

Trickling filters
Aerated lagoons
Oxidation ditch
Oxidation pond

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Environmental Engineering
As compared to shallow wells, deep wells have

Less discharge
More discharge
More depth
Less depth

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Environmental Engineering
Turbidity is measured on

Standard platinum scale
Standard silica scale
Platinum cobalt scale
Standard cobalt scale

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Environmental Engineering
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called

Anti-siphonage pipe
Waste pipe
Soil pipe
Vent pipe

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MORE MCQ ON Environmental Engineering

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