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Environmental Engineering in CE

Environmental Engineering in CE
The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is

Boundary layer separation
Pipe vibrations
Cavitation
Fluctuation in liquid flow

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Environmental Engineering in CE
'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.

Uranium ore
Iron ore
Lime
Coal

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Environmental Engineering in CE
Algae growth in water is controlled by

Bleaching
Aeration
Deoxidation
Chlorination

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Environmental Engineering in CE
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.

10-100
100-1000
100-200

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Environmental Engineering in CE
Inhalation of silica dust causes a disease called

Bronchitis
Pneumoconiosis
None of these
Silicosis

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

25
50
80
120

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