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Environmental Engineering in CE

Environmental Engineering in CE
When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell.

1
0.01
4
0.1

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

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

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Environmental Engineering in CE
Carbonaceous particles having size less than 1 μm are called

Aerosols
Grit
Smoke
Aggregates

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Environmental Engineering in CE
Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes

All of these
Nervous depression
Paralysis of muscles & loss of appetite
Gastritis & diarrhea

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Environmental Engineering in CE
Threshold limit value (TLV) of CO in air is __________ ppm.

50
2000
5
5000

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Environmental Engineering in CE
Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes

Blood poisoning
Anaemia
Nervous system disorder
All of these

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