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Environmental Engineering in CE

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

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

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Environmental Engineering in CE
Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m²/hr.

15 to 20
0.1 to 1
3 to 6
10 to 15

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Environmental Engineering in CE
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan

With greater number of blades
Both A & B
Neither A nor B
Of increased diameter

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Environmental Engineering in CE
World's worst radioactive pollution was caused by nuclear reactor disaster which occured in

Chernobyl (undivided U.S.S.R.)
Moscow (U.S.S.R.)
Arizona (U.S.A.)
Pensylvania (U.S.A.)

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Environmental Engineering in CE
Presence of iron and manganese in water causes

Reduction in its dissolved oxygen content
Temporary hardness
Discoloration of bathroom fixtures
None of these

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Environmental Engineering in CE
Water effluent generated in printing industry is decolourised by

Electrolytic decomposition
Adsorption
Ion exchange technique
Reverse osmosis

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MORE MCQ ON Environmental Engineering in CE

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