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Environmental Engineering in CE

Environmental Engineering in CE
Main pollutants released from petroleum refineries is

CO₂, NO & SO₃
CO₂, H₂S & NO₂
SO₃, NO₂ & CO₂
CO, SO₂ & H₂S

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Environmental Engineering in CE
Pick out the wrong statement pertaining to 'green house' for the plants.

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Environmental Engineering in CE
The resistance of water to the passage of light through it is a measure of the

Color
Turbidity
Dissolved gases
Hardness

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Environmental Engineering in CE
Noise pollution level in a chemical plant is expressed in

None of these
Hertz
Decibel
Roentgen

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Environmental Engineering in CE
Carbonaceous particles having size less than 1 μm are called

Smoke
Aggregates
Aerosols
Grit

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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.

120
90
105
60

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