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Environmental Engineering in CE

Environmental Engineering in CE
Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances.

None of these
Organic
Radioactive
Inorganic

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

Files
Algae
Micro-organisms
Mosquitoes

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Environmental Engineering in CE
Maximum permissible turbidity in potable water is __________ ppm.

250
1000
1
10

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Environmental Engineering in CE
Which of the following fine dust removal equipments is the most efficient?

Cyclone separator
Bag filter
Scrubber
Electrostatic precipitator

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Environmental Engineering in CE
Radioactive solid nuclear wastes are disposed off by

Pyrolysis
Pathological incineration
Underground burial in concrete containers
High temperature incineration

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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).

3
7
20
1

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