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Waste Water Engineering

Waste Water Engineering
If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is

100 cm
50 cm
80 cm
90 cm

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

Nitrogen
Carbon dioxide
Hydrogen
Oxygen

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

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

Oxygen
Carbondioxide
Sulphur-dioxide
Nitrogen

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Waste Water Engineering
Depletion of ozone layer in the outer atmosphere may cause

Skin cancer
Bronchitis
Lung cancer
Heart disorder

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Waste Water Engineering
Drop manholes are the manholes

Without entry ladders
Without manhole covers
With depths more than 3.5 m
Having drains at different levels

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MORE MCQ ON Waste Water Engineering

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