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Environmental Engineering in CE

Environmental Engineering in CE
Which is the most practical and economical method for removal of suspended solid matter from polluted water?

Biological oxidation
Sedimentation
Skimming off
Chlorination

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Environmental Engineering in CE
Noise level inside a jet air liner in normal flight is about __________ decibels.

100
80
145
125

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Environmental Engineering in CE
In water chemical treatment plant, use of chloramines ensures

Disinfection
Weed control in reservoirs
Removal of permanent hardness
Taste & odour control

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Environmental Engineering in CE
When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell.

1
0.01
0.1
4

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Environmental Engineering in CE
In water treatment, alum[Al2(SO₄)3] is used for the process of

Filtration
Coagulation
Disinfection
Sedimentation

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Environmental Engineering in CE
Which of the following fine dust removal equipments is the most efficient?

Electrostatic precipitator
Bag filter
Cyclone separator
Scrubber

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MORE MCQ ON Environmental Engineering in CE

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