JEE Main Chemistry question

Which modifications are necessary to determine the resistance of a solution by the usual method of measurement on the Wheatstone bridge principle?

(A)A.C. should be used
(B)A conductivity cell is used
(C)The galvanometer is replaced by a "magic eye" or headphone arrangement
(D)All of the aboveCorrect

Answer: (D)

Solution

To avoid electrolysing the solution and polarising the electrodes, an AC source is used instead of DC; a special conductivity cell (with platinised Pt electrodes)

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Question ID VK-144078