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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

Pipe vibrations
Boundary layer separation
Cavitation
Fluctuation in liquid flow

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Environmental Engineering in CE
Average human body contains about __________ percent water by weight.

70
85
40
20

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Environmental Engineering in CE
Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the

Forestation
Rain
Green house effect
Vegetation

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Environmental Engineering in CE
Brown spots in fabrics will be caused by washing with water containing large amount of .

Zinc
Bromine
Iron
Iodine

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Environmental Engineering in CE
Foul odour and bad taste of water is removed by treating with

Activated carbon
Copper sulphate
Bleaching powder
Alum

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Environmental Engineering in CE
Smog is not formed due to the presence of __________ in the atmosphere.

CO₂
SO₂
Any of these
NOx

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