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Environmental Engineering in CE

Environmental Engineering in CE
Growth of __________ is promoted by the presence of manganese in water.

Algae
Micro-organisms
Files
Mosquitoes

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Environmental Engineering in CE
In large thermal power stations very fine particulates present in flue gas are removed by

Electrostatic precipitators
Wet scrubber
Dust catcher
Bag filter

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Environmental Engineering in CE
In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks.

9 to 10
15 to 20
4 to 5
1 to 2

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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

None of these
Chemical coagulation
Treating in biological oxygen pond
Chlorination

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Environmental Engineering in CE
Peroxyacyl nitrate (PAN), a pollutant is found in the

Exhaust of nitric acid plant
Exhaust of sulphuric acid plant
Automobile exhaust
Flue gas of coal based power plant

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Environmental Engineering in CE
Presence of high concentration of ozone and smog in atmospheric air causes the

Embrittlement & decrease of folding resistance of paper
Fading of dye on textiles
Damage of electrical insulator on high tension power line
Cracking of rubber products

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