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Environmental Engineering in CE

Environmental Engineering in CE
Most of the bacteria in sewage are

Saprophytic
Parasitic
None of these
Anerobic

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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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Environmental Engineering in CE
In a sedimentation tank, the detention period for water ranges from __________ hours.

2 to 4
8 to 12
16 to 20
24 to 32

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Environmental Engineering in CE
Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming

(i) and (ii)
(i) and (iii)
All are correct
Only (i)

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Environmental Engineering in CE
The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.

10
200
2000
1000

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Environmental Engineering in CE
Solid content in most of the domestic sewage is about __________ percent.

0.1
0.001
10
5

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