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Environmental Engineering in CE

Environmental Engineering in CE
Exposure to chemicals having carcinogenic properties cause

Cancer
Dermatitis (skin disorder)
Asphyxiation (suffocation)
Asthma

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Environmental Engineering in CE
Which of the following processes is involved in the biochemical treatment of sewage effluents?

Reduction
Dehydration
Fermentation
Oxidation

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Environmental Engineering in CE
Global warming may result in

Flood
Cyclone
Decrease in food productivity
All of these

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Environmental Engineering in CE
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

Extremely
Moderately
Highly
Very extremely

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Environmental Engineering in CE
Which of the following is a secondary air pollutant?

Dust particles
Photochemical smog
Sulphur dioxide
Nitrogen dioxide

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Environmental Engineering in CE
Lagooning process is mainly a means of the

Reduction of excessive flow in sewers
Sludge disposal
Biological treatment of wastes
None of these

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