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Environmental Engineering in CE

Environmental Engineering in CE
Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

400
1000
4000
100

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Environmental Engineering in CE
Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas?

Carbon monoxide
Hydrogen
Ammonia
Acetylene

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Environmental Engineering in CE
Noise pollution level in a chemical plant is expressed in

Hertz
None of these
Decibel
Roentgen

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Environmental Engineering in CE
Color test of water is done with an instrument called

Colorimeter
Tintometer
Turbidimeter
Electro-chemical cell

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

Bronchitis
Cancer
Asphyxiation
Corrosion

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Environmental Engineering in CE
Iron & manganese present in the polluted water is removed by

Oxidation followed by settling & filtration
Chlorination only
Simple filtration
Chemical coagulation

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