Which of the following solutions of KCl has the lowest value of molar conductance ?(A) 1 M (B) 0.1 M (C) .01 M (D) .001

To determine which of the given solutions of KCl has the lowest value of molar conductance, we need to understand the relationship between molar conductance and concentration.

Molar conductance is a measure of the ability of a solution to conduct electricity. It is influenced by the concentration of ions in the solution. Generally, as the concentration of ions increases, the molar conductance also increases.

In this case, we are comparing the molar conductance of different solutions of KCl with varying concentrations. The options given are 1 M, 0.1 M, 0.01 M, and 0.001 M.

Based on the relationship mentioned earlier, we can conclude that the solution with the lowest concentration will have the lowest molar conductance. Therefore, the solution with the lowest value of molar conductance is option (D) 0.001 M.