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Environmental Engineering in CE

Environmental Engineering in CE
Presence of __________ bacteria in water causes disease like typhoid.

Aerobic
Anaerobic
Non-pathogenic
Pathogenic

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Environmental Engineering in CE
The common pollutant generated in chlor-alkali industry and battery manufacture is

Mercury
Phosphate
None of these
Brine

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Environmental Engineering in CE
The Killer gas which caused Bhopal gas tragedy in 1984 was

Phosgene
Carbon monoxide
Sulphur dioxide
Methyl iso-cynate (MIC)

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Environmental Engineering in CE
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes

Depletion of dissolved oxygen
Explosion hazards
Fire hazards
Persistent foam

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Environmental Engineering in CE
Which of the following is an adsorbant used for the removal of SO₂ from gas/air?

Bog iron
Active carbon
Limestone powder or alkalised alumina
Silica gel

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Environmental Engineering in CE
Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)?

Benzopyrene
Carbon monoxide
Sulphur dioxide
Peroxyacyl nitrate

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