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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur?

Stratosphere
Troposphere
None of these
Thermosphere

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

Dust catcher
Bag filter
Electrostatic precipitators
Wet scrubber

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Environmental Engineering in CE
Which of the following is not a weightless pollutant?

SPM
Noise pollution
Thermal pollution
Radioactive rays

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Environmental Engineering in CE
Tri-sodium phosphate is used in boiler water treatment to reduce

Dissolved oxygen
Turbidity
Suspended silica
Caustic embrittlement

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Environmental Engineering in CE
There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km.

6.5
1
15
0.05

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Environmental Engineering in CE
Which of the following is a manmade source of air pollution?

Forest fire
All of these
Automobile exhaust
Bacterial action in soil and swamp areas

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