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ENVIRONMENTAL ENGINEERING IN CE

Environmental Engineering in CE
Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage?

Sulphur dioxide & spray of weed killers
Smog & ozone
Carbon monoxide
Hydrogen fluoride & nitrogen oxides

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

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

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Environmental Engineering in CE
Workers working in __________ industry are most prone to white lung cancer.

Textile
Coal mining
Asbestos
Limestone mining

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Environmental Engineering in CE
Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes

Blood poisoning
Anaemia
Nervous system disorder
All of these

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

1500
20
750
230

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