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Environmental Engineering in CE

Environmental Engineering in CE
Salt content in sea water is about __________ percent.

3.5
0.5
10
1

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Environmental Engineering in CE
The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent.

8
12
1
4

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Environmental Engineering in CE
__________ substances present in sewage are removed in grit chamber during sewage treatment.

Fatty
Dissolved
Inorganic
Organic

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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
Fresh domestic sewage is __________ in color.

Black
Dark brown
Grey
Red

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Environmental Engineering in CE
Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as

Poly acrylonitrile
Peroxy acetyl nitrate (PAN) or methyl nitrile
Benzopyrene
Photochemical smog

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