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Environmental Engineering in CE

Environmental Engineering in CE
__________ substances present in sewage are removed in grit chamber during sewage treatment.

Inorganic
Organic
Fatty
Dissolved

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Environmental Engineering in CE
Fresh domestic sewage is __________ in color.

Black
Dark brown
Grey
Red

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Environmental Engineering in CE
Arsenic pollutant is not generated in____industries.

Any of these
Tanneries
Glass & ceramic
Beverages

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Environmental Engineering in CE
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?

Alkyl benzene sulphonate (ABS)
Benzene hexachloride
Alkalis
Chlorine

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Environmental Engineering in CE
In the context of the chemical process industries, the term BOD is normally associated with the

Organic concentration in gaseous effluents
Characterisation of boiler feed water
Characterisation of liquid effluents
Characterisation of solid wastes

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Environmental Engineering in CE
Hydrogen ion concentration in distilled water is

7 x 10⁷
10⁷
10⁻⁷
7 x 10⁻⁷

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