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Environmental Engineering in CE

Environmental Engineering in CE
Most of the atmospheric air pollutants are present in large quantity in

Thermosphere
Trophosphere
Mesosphere
Stratosphere

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Environmental Engineering in CE
The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU).

230
20
1500
750

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Environmental Engineering in CE
Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels.

75
140
95
120

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Environmental Engineering in CE
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.

50
500
1
5

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

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

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

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

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MORE MCQ ON Environmental Engineering in CE

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