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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following plants does not emit appreciable amount of SO₂ in atmosphere?

Petroleum refinery
Thermal power plant
Nitric acid plant
Sulphuric acid plant

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Environmental Engineering in CE
Ozone level is generally found to be depleted in India in the month of

February
December
July
April

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Environmental Engineering in CE
BOD of raw municipal sewage may be in the range of about __________ mg/litre.

1-2
150-300
2000-3000
5-10

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Environmental Engineering in CE
Arsenic pollutant is not generated in____industries.

Tanneries
Beverages
Glass & ceramic
Any of these

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Environmental Engineering in CE
Salt content in sea water is about __________ percent.

1
10
0.5
3.5

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Environmental Engineering in CE
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of

Ultraviolet light for irradiation of water
Chlorine or its compounds
All of these
Ozone and iodine

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