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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following pollutants, if present in atmosphere is detectable by its odour?

CO
NO₂
CO₂
SO₂

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Environmental Engineering in CE
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by

Ultrafiltration
Chemical coagulation
Floatation & skimming
Centrifugation

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

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

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Environmental Engineering in CE
The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.

105
120
90
60

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Environmental Engineering in CE
Main pollutants released from iron & steel industry is

SO₃, NO₂ & CO₂
CO₂, H₂S & NO₂
CO, CO₂ & SO₂
H₂S, NO & SO₃

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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
Limestone powder or alkalised alumina
Active carbon
Silica gel

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