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Question:

Consider the statements S1 and S2:
S1: Conductivity always increases with a decrease in the concentration of electrolyte.
S2: Molar conductivity always increases with a decrease in the concentration of electrolyte.
The correct option among the following is:

Both S1 and S2 are correct

S1 is correct and S2 is wrong

S1 is wrong and S2 is correct

Both S1 and S2 are wrong

Solution:

Solution:- (B) S1 is wrong and S2 is correct
On dilution, the number of ions per ml decreases, so conductivity decreases; hence S1 is wrong.
ΛM = 1000 × k/C
On dilution, C and k both decrease, but the effect of C is more dominating, so ΛM increases; hence S2 is right.