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________ is used to find the D.O content of sewage.

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________  is used to find the D.O content of sewage.

(a) Winkler method

(b) Chromatography

(c) Kjeldahl method

(d) Olfactometer

The question was asked in class test.

The above asked question is from Chemical Characteristics of Waste Water in chapter Wastewater Characteristics of Environmental Engineering

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Best answer
The correct option is (b) Chromatography

The best explanation: Wrinkler method is used to find the D.O content of sewage where the D.O content is proportional to the titration of iodine with S2O32- solution.

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