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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
Mosquitoes
Files

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Environmental Engineering in CE
Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?

CO₂
H₂
SO₃
N₂

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Environmental Engineering in CE
The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.

105
90
60
120

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Environmental Engineering in CE
The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

Only (i)
Both (i) and (ii)
Both (i) and (iii)
All (i), (ii) and (iii)

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Environmental Engineering in CE
Smog is

A combination of smoke and fog
A solid particle e.g. flyash
Nothing but black smoke
A liquid particle resulting from vapor condensation

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Environmental Engineering in CE
Most of the atmospheric air pollutants are present in large quantity in

Thermosphere
Stratosphere
Mesosphere
Trophosphere

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