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Environmental Engineering in CE

Environmental Engineering in CE
Arsenic pollutant is not generated in____industries.

Beverages
Glass & ceramic
Tanneries
Any of these

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Environmental Engineering in CE
Hydrogen ion concentration in distilled water is

7 x 10⁻⁷
10⁻⁷
10⁷
7 x 10⁷

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Environmental Engineering in CE
Green house effect is accentuated by

All of these
Deforestation
Increased transportation activity
Rapid industrialisation

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Environmental Engineering in CE
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

In clarifiers
In sedimentation tanks equipped with mechanical scrapper
By chemical coagulation
In vacuum filter

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Environmental Engineering in CE
Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million).

1.2
0.2
4.8
0.002

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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

Atmospheric effect
Ionosphere
Green house
Global warming

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