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Waste Water Engineering

Waste Water Engineering
For sewers, inverted siphon is provided for

Three pipes
Two pipes
One pipe
Four pipes

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Waste Water Engineering
The porosity of sediments in sewer pipes, is usually taken as

0.011
0.012
0.01
0.013

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Waste Water Engineering
If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is

1 in 120
None of these
1 in 100
1 in 60

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Waste Water Engineering
The most dangerous pollutant in vehicular emissions is

O₂
CO₂
CO₂
SO₂

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.15 D
1.5 D
1.75 D
1.25 D

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Waste Water Engineering
Flocculated particles do not change their

Shape
None of these
Size
Weight

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