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Environmental Engineering

Environmental Engineering
Sewage treatment units are designed for

Average flow only
Maximum and minimum flow
Minimum flow only
Maximum flow only

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Environmental Engineering
The ratio of 5 day BOD to ultimate BOD is about

43894
43833
1
43864

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Environmental Engineering
Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system?

Equivalent pipe method
Circle method
Hardy cross method
Electrical analysis method

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Environmental Engineering
The maximum efficiency of BOD removal is achieved in

Trickling filters
Oxidation pond
Oxidation ditch
Aerated lagoons

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Environmental Engineering
As compared to shallow wells, deep wells have

Less depth
Less discharge
More discharge
More depth

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Environmental Engineering
Which of the following unit works in anaerobic conditions?

Trickling filters
Activated sludge treatment
Sedimentation tank
Sludge digestion tank

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