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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
Shouting by a man at his full voice corresponds to a voice level of about __________ decibels.

80
25
50
120

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Environmental Engineering in CE
COD of raw municipal sewage may be in the range of about __________ mg/litre.

1-2
1500-2500
90-120
5-10

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Environmental Engineering in CE
BOD of raw municipal sewage may be in the range of about __________ mg/litre.

2000-3000
1-2
5-10
150-300

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Environmental Engineering in CE
The lowest layer of atmosphere is known as the

Stratosphere
None of these
Ionosphere
Troposphere

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Environmental Engineering in CE
__________ is the process of killing organism in water.

Sterilisation
Coagulation
Disinfection
Sedimentation

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