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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?

Hg
NOx
SO₂
F

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Environmental Engineering in CE
__________ is the process of killing organism in water.

Disinfection
Sedimentation
Coagulation
Sterilisation

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Environmental Engineering in CE
Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of

CO₂
Hydrocarbons
SO₂
CFC (chloro fluoro carbon)

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Environmental Engineering in CE
Operating principle of cyclone separator is based on the action of __________ dust particles.

Centrifugal force on
Electrostatic force on
Diffusion of
Gravitational force on

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Environmental Engineering in CE
The pH value of oxidised sewage is about

1.8
13.4
7.3
6.2

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Environmental Engineering in CE
Out of the following, TLV of __________ is maximum (about 500 ppm).

Toluene
Carbon dioxide
Acetaldehyde
Carbon disulphide

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