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Environmental Engineering in CE

Environmental Engineering in CE
The most commonly used chemical coagulant in water treatment is

Hydrazine
Ferrous sulphate
Alum
Lime

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Environmental Engineering in CE
Presence of __________ hardness is responsible for the temporary hardness in water.

Choride
Calcium
Sulphate
Carbonate

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Environmental Engineering in CE
The main industrial source of emission of hydrogen sulphide air pollutant is

Petroleum refineries
Metallurgical roasting & smelting plant
Coal based thermal power plants
Pulp and paper plant

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Environmental Engineering in CE
What are the methods of treatment & disposal of radioactive wastes?

Evaporation & chemical precipitation
Fixing into a solid mass with cement and sinking deep in the sea
All of these
Biological methods & adsorption in ion exchange materials

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Environmental Engineering in CE
Main pollutants released from petroleum refineries is

CO, SO₂ & H₂S
CO₂, NO & SO₃
SO₃, NO₂ & CO₂
CO₂, H₂S & NO₂

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Environmental Engineering in CE
The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU).

750
20
1500
230

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MORE MCQ ON Environmental Engineering in CE

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