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Waste Water Engineering

Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.625 D
1.250 D
1.350 D
1.425 D

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Waste Water Engineering
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains

Methane
Oxygen
Carbon dioxide
Hydrogen sulphide

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

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

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Waste Water Engineering
The suitable cross-section of sewers to carry combined flow, is

Rectangular
Horse shoe shaped
Egg shaped
Circular

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Waste Water Engineering
For evaporation and measurement of settable solids, the apparatus used, is

A breaker
An Imhoff cone
A jar
A test tube

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Waste Water Engineering
The most dangerous pollutant in vehicular emissions is

O₂
CO₂
CO₂
SO₂

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