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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

43832
15-20
43961
25-30

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Environmental Engineering in CE
Pick out the one which is not a chemical coagulant.

Aluminium sulphate
Ferrous sulphate
Hydrated lime
Chloramine

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Environmental Engineering in CE
Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes

Nervous depression
Gastritis & diarrhea
All of these
Paralysis of muscles & loss of appetite

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Environmental Engineering in CE
Which of the following industries discharge mercury as a pollutant?

Beverage plant
Chloro-alkali industry
Phosphoric acid plant
Tanneries

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Environmental Engineering in CE
Which of the following is the most severe air pollutant?

CO
SO₂
Hydrocarbons
NOx

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