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Environmental Engineering in CE

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

Nervous system disorder
Anaemia
Blood poisoning
All of these

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Environmental Engineering in CE
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

By chemical coagulation
In clarifiers
In sedimentation tanks equipped with mechanical scrapper
In vacuum filter

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Environmental Engineering in CE
Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the

Vegetation
Rain
Forestation
Green house effect

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Environmental Engineering in CE
Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.

100-200
100-1000
10-100

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Environmental Engineering in CE
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan

With greater number of blades
Neither A nor B
Of increased diameter
Both A & B

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Environmental Engineering in CE
Ethanolamine is an absorbant used for the removal of __________ from air/gas.

HF
Both B & C
SO₂
H₂S

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