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Environmental Engineering in CE

Environmental Engineering in CE
The common pollutant generated in chlor-alkali industry and battery manufacture is

Phosphate
Brine
Mercury
None of these

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Environmental Engineering in CE
Salt content in sea water is about __________ percent.

10
0.5
3.5
1

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Environmental Engineering in CE
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called

Mesosphere
Thermosphere
Stratosphere
Troposphere

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Environmental Engineering in CE
Presence of soluble organics in polluted water causes

Undesirable plants growth
Fire hazards
Explosion hazards
Depletion of oxygen

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Environmental Engineering in CE
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes

Asphyxiation (suffocation)
Tuberculosis
All of these
Shortness of breath

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

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

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