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Environmental Engineering in CE

Environmental Engineering in CE
Aerosols present in atmospheric air may be

Neutral
Negatively charged
Positively charged
Combination of all A, B & C

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Environmental Engineering in CE
Pollution by particulate matter emission in the atmosphere does not take place during metal

Machining
Grinding
Polishing
Cutting

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

Asphyxiation
Bronchitis
Corrosion
Cancer

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Environmental Engineering in CE
Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ percent (by volume).

20
1
7
3

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Environmental Engineering in CE
Iron & manganese present as pollutant in water can not be removed by

Oxidation followed by settling & filtration
Lime soda process or manganese zeolite process
Chlorination
Ion exchange process

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Environmental Engineering in CE
__________ can not control the noise pollution.

Tree plantation
Green house gases
Vibration damping
Use of silencers

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MORE MCQ ON Environmental Engineering in CE

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