Question

42) Which of the following is not true about the galvanic method of
oxygen analysis?
Electrodes are composed of noble and base metals
It can measure dissolved content of oxygen
Its principle is based on electrolysis
It utilizes an electronic cell
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Answer 1

The false statement about galvanic method of oxygen analysis is (c) Its principle is based on electrolysis.

• The method of galvanic rection is based on the contrradictory electrolysis.
• In this method, the electric current developed is directly related to the rate of oxygen uptake by the electrical cells.
• The oxygen being paramegnetic because of the presence of unpaired electrons and is attracted to the magnetic field.

Answer 2

The correct answer is (c) because its principle is based on electrolysis.

Explanation: The reverse of electrolysis is used in the galvanic method of oxygen analysis. The rate of oxygen uptake by the cell is related to the electrical current created in this manner.