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Waste Water Engineering

Waste Water Engineering
In sewers the gas generally found, is

Methane (CH4)
Hydrogen sulphide (H2S)
All listed here
Carbon dioxide (CO2)

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

Hydrogen
Carbon dioxide
Oxygen
Nitrogen

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Waste Water Engineering
The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is

25 cm
50 cm
20 cm
40 cm

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Waste Water Engineering
For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed

2.5
1.5
2
3

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Waste Water Engineering
The most dangerous pollutant in vehicular emissions is

CO₂
O₂
SO₂
CO₂

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Waste Water Engineering
Flocculated particles do not change their

Weight
Size
None of these
Shape

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MORE MCQ ON Waste Water Engineering

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