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Environmental Engineering in CE

Environmental Engineering in CE
Out of the following, TLV of __________ is the minimum (about 0.02 ppm).

MIC (methyl iso-cynate)
Bromine
Phosgene
Ozone

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Environmental Engineering in CE
Beyond what concentration of H₂S in air, acute danger to human life exists?

100 ppm
300 ppm
700 ppm
50 ppm

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Environmental Engineering in CE
Presence of high concentration of ozone and smog in atmospheric air causes the

Damage of electrical insulator on high tension power line
Embrittlement & decrease of folding resistance of paper
Cracking of rubber products
Fading of dye on textiles

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Environmental Engineering in CE
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the

Green house
Atmospheric effect
Ionosphere
Global warming

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Environmental Engineering in CE
Nitrogen oxides (NOx) is not produced in the __________ industry.

Detergent
Nitrogenous fertiliser
Any of these
Nitric acid making

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Environmental Engineering in CE
Ionisation potential employed in the industrial electrostatic precipitator is of the order of

230 V DC
230 V AC
30 to 70 kV AC
30 to 70 kV DC

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