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(A) Molar conductivity $(\Lambda_m)$ is defined as the conductance of all the ions produced by one mole of an electrolyte in a given volume of solutio

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$0.001$

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(A) Molar conductivity $(\Lambda_m)$ is defined as the conductance of all the ions produced by one mole of an electrolyte in a given volume of solution.
It is related to the concentration $(C)$ by the expression $\Lambda_m = \frac{\kappa}{C}$,where $\kappa$ is the specific conductivity.
As the concentration of the solution decreases,the volume containing one mole of the electrolyte increases,leading to an increase in molar conductivity.
Therefore,molar conductivity is inversely proportional to the concentration.
Among the given options,the lowest concentration is $0.001 \ M$,which will result in the maximum molar conductivity.

The molar conductivity is maximum for the solution of concentration $...........$ $M$.

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