question_answer 91)

  Assertion (A) Conductivity of all electrolytes decreases on dilution. Reason (R) On dilution number of ions per unit volume decreases.

Answer:

                  (a) Both assertion and reason are correct and reason is the correct explanation of assertion. Since, conductivity depends upon number of ions per unit volume. Therefore, the conductivity of all electrolytes decreases on dilution due to decrease in number of ions per unit volume.