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Environmental Engineering

Environmental Engineering
The detention period in coagulation tanks is usually kept as

30 to 45 minutes
2 to 6 days
1 to 2 minutes
2 to 6 hours

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Environmental Engineering
The specific gravity of sewage is

Equal to 1
Slightly greater than 1
Slightly less than 1
Much greater than 1

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Environmental Engineering
The most common cause of acidity in water is

Carbon dioxide
Oxygen
Nitrogen
Hydrogen

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Environmental Engineering
The characteristics of fresh and septic sewage respectively are

Acidic and alkaline
Both alkaline
Alkaline and acidic
Both acidic

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Environmental Engineering
Generally the detention period for grit chambers is kept as

5 minutes
24 hours
12 hours
1 minute

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Environmental Engineering
The type of sewer which is suitable for both combined and separate system is

Circular sewer
Egg shaped sewer
Horseshoe type sewer
Semi-elliptical sewer

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MORE MCQ ON Environmental Engineering

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