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Environmental Engineering in CE

Environmental Engineering in CE
Ethanolamine is an absorbant used for the removal of __________ from air/gas.

HF
H₂S
Both B & C
SO₂

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Environmental Engineering in CE
Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ percent (by volume).

20
7
1
3

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Environmental Engineering in CE
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes

Foaming
Undesirable plant growth
Odour nuisances
Turbidity

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Environmental Engineering in CE
Thermal pollution due to excessive heat & temperature in the working place causes

Fatigue
All of these
High breathing rate
Reduction in working efficiency of manpower

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Environmental Engineering in CE
Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million).

50
2000
1000
5000

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

Brine
None of these
Phosphate
Mercury

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