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Environmental Engineering

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
Sewerage system is usually designed for

26 years
25 years
28 years
27 years

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Environmental Engineering
The rate of filtration in slow sand filters in million litres per day per hectare is about

1400 to 1500
500 to 600
50 to 60
100 to 150

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Environmental Engineering
The gas from sludge digestion tank is mainly composed of

Carbon dioxide
Methane
Hydrogen sulphide
Nitrogen

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Environmental Engineering
The process of lagooning is primarily a means of

Increasing flow of sewage through imhoff tanks
Disposing of sludge
Increasing the capacity of storage reservoirs
Reducing the excessive flow in sewers

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Environmental Engineering
In facultative stabilization pond, the sewage is treated by

Dual action of aerobic bacteria and anaerobic bacteria
Sedimentation
Algae only
Aerobic bacteria only

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MORE MCQ ON Environmental Engineering

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