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Environmental Engineering in CE

Environmental Engineering in CE
Higher concentration of nitrogen dioxide in atmospheric air causes

Bronchitis
Corrosion
Asphyxiation
Cancer

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Environmental Engineering in CE
Which of the following is not a source of ozone emission in the atmosphere?

High voltage electrical equipments
Dermatological photo-therapy equipments
Xerox machines
Refrigerators

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Environmental Engineering in CE
Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.

95
35
105
75

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Environmental Engineering in CE
In large thermal power stations very fine particulates present in flue gas are removed by

Electrostatic precipitators
Wet scrubber
Bag filter
Dust catcher

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Environmental Engineering in CE
In water treatment plant, zeolite process is used to remove the __________ of water.

Acidity
Alkalinity
Hardness
Iron & zinc

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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
Evaporation & chemical precipitation
Biological methods & adsorption in ion exchange materials
All of these

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