Assertion :cell constant is the EMF of a cell. Reason: Cell constant is determined by using saturated KCl solution.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Cell constant:
The quantity l/A is called cell constant denoted by the symbol, G.
It depends on-
Distance between the electrodes.
Area of cross-sections.
The cell constant is determined by measuring the resistance of the cell containing a solution whose conductivity is already known.
ex : KCl solutions
so,
G is determined by using KCl solution since its conductivity is known accurately at various concentrations and at different temperatures.

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