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Waste Water Engineering

Waste Water Engineering
Imhoff cone is used to measure

Settleable solids
Total organic solids
Total solids
Total in organic solids

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Waste Water Engineering
Discrete or granular particles change their

Weight
Shape
Size
None of these

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Waste Water Engineering
Kjeldahl nitrogen is a mixture of

Nitrogen and organic nitrogen
All listed here
Ammonia and nitrogen
Organic nitrogen and ammonia

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Waste Water Engineering
Drop manholes are the manholes

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

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Waste Water Engineering
Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is

pt = 3H3p/2 Z5
pt = 2H3p/3 Z5
pt = 2H3p/3 Z5
pt = 3H3p/2 Z5

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Waste Water Engineering
The detention time (t) of a settling tank, may be defined as the time required for

A particle to travel from top surface to bottom sludge zone
None of these
A particle to travel along its length
The flow of sewage to fill the tank

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