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Environmental Engineering

Environmental Engineering
Sewerage system is usually designed for

28 years
26 years
27 years
25 years

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Environmental Engineering
The effect of increasing diameter of sewer on the self cleansing velocity is

To decrease it
To increase it
Nil
Fluctuating

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Environmental Engineering
The rate of BOD exerted at any time is

Directly proportional to BOD satisfied
Inversely proportional to BOD satisfied
Inversely proportional to BOD remaining
Directly proportional to BOD remaining

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Environmental Engineering
The pathogens can be killed by

Chlorination
Nitrification
Oxidation
None of these

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Environmental Engineering
In water treatment, rapid gravity filters are adopted to remove

Dissolved organic substances
Floating solids and dissolved inorganic solids
Bacteria and colloidal solids
Dissolved solids and dissolved gases

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Environmental Engineering
Alkalinity in water is expressed as milligrams per litre in terms of equivalent

Sodium carbonate
Calcium carbonate
Magnesium carbonate
Calcium hydroxide

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MORE MCQ ON Environmental Engineering

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