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Environmental Engineering

Environmental Engineering
The pathogens can be killed by

Chlorination
Oxidation
Nitrification
None of these

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Environmental Engineering
For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be

Partially separate system
Separate system
Combined system
Partially combined system

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Environmental Engineering
The specific gravity of sewage is

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

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

Nil
To increase it
Fluctuating
To decrease it

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Environmental Engineering
Which of the following chemical compounds can be used for de-chlorination of water?

Bleaching powder
Chloramines
Carbon dioxide
Sulphur dioxide

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Environmental Engineering
The characteristics of fresh and septic sewage respectively are

Alkaline and acidic
Both acidic
Both alkaline
Acidic and alkaline

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