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Waste Water Engineering

Waste Water Engineering
If the pH value of sewage is 7

It is neutral
It is acidic
It is alkaline
None of these

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Waste Water Engineering
The design period in years for pumping plants, is

2 to 3
1
3 to 5
5 to 10

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Waste Water Engineering
An inverted siphon is designed generally for

Four pipes
Three pipes
One pipe
Two pipes

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Waste Water Engineering
The formula V = (1/n) r2/3

Kutter’s formula
Bazin’s formula
Chezy’s formula
Manning’s formula

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Waste Water Engineering
For detecting the nitrites in the sewage, the matching colour may be developed by adding

Phenol-di -sulphuric acid potassium hydroxide
Potassium permanganate
Sulphuric acid and napthamine
None of these

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Waste Water Engineering
The sewer which received discharge from two or more main sewers, is known as

An outfall sewer
A trunk sewer
A main sewer
An intercepting sewer

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