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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following is a manmade source of air pollution?

Forest fire
Automobile exhaust
All of these
Bacterial action in soil and swamp areas

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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.

12
8
1
4

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Environmental Engineering in CE
Biological oxidation ponds remove organic matters present in the polluted water by

Neither A nor B
Aerobic oxidation
Both A & B
Using the activities of bacteria and other micro organisms

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Environmental Engineering in CE
A standard test for determination of hardness in water is termed as __________ test.

EDTA
Presumptive
Electometric
Total count

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Environmental Engineering in CE
A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm.

6000 to 9000
1000 to 2000
10000 to 100000
3000 to 6000

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Environmental Engineering in CE
The commonest form of iron & manganese found in ground water as pollutant is in the form of their

Bi-carbonates
Sulphides
Carbonates
Chlorides

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MORE MCQ ON Environmental Engineering in CE

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