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Environmental Engineering in CE

Environmental Engineering in CE
Presence of dissolved impurities of __________ is responsible for the red brownish color of water.

Iron & manganese
Carbonates
Bi-carbonates
Arsenic

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Environmental Engineering in CE
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by

Chlorination
Chemical coagulation
None of these
Treating in biological oxygen pond

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Environmental Engineering in CE
The progressive warming up of the earth's surface is mainly due to the

Thickening of ozone layer
Automobile exhaust
De-forestation
Blanketing effect of CO₂ in the atmosphere

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

HF
Both B & C
H₂S
SO₂

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Environmental Engineering in CE
5-200 μm size particles are called

Dust
Colloids or aerosols
Powder
Smoke

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Environmental Engineering in CE
The maximum CO₂ is emitted into the atmosphere by

Trees
Combustion
Biomass burning
Urea

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MORE MCQ ON Environmental Engineering in CE

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