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Environmental Engineering in CE

Environmental Engineering in CE
__________ is the process of killing organism in water.

Disinfection
Coagulation
Sedimentation
Sterilisation

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Environmental Engineering in CE
If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.

50
3000 (i.e. 0.3%)
500
1000

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Environmental Engineering in CE
Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as

Photochemical smog
Benzopyrene
Poly acrylonitrile
Peroxy acetyl nitrate (PAN) or methyl nitrile

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Environmental Engineering in CE
In water treatment plant, zeolite process is used to remove the __________ of water.

Alkalinity
Hardness
Iron & zinc
Acidity

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Environmental Engineering in CE
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called

Troposphere
Mesosphere
Thermosphere
Stratosphere

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Environmental Engineering in CE
If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test

Only (i)
Both (i) and (ii)
All (i), (ii) and (iii)
Both (i) and (iii)

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