MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

When an electrolyte solution is diluted, the volume of the solution increases, which leads to a decrease in the number of ions per unit volume. As a result, the specific conductivity (k) decreases. Molar conductivity ( ) is the conductance of the volume of solution containing one mole of the electrolyte. It is given by = k V. Upon dilution, the increase in volume (V) more than compensates for the decrease in specific conductivity (k). Additionally, for weak electrolytes, the degree of dissociation increases, and for strong electrolytes, interionic attractions decrease, leading to higher ionic mobility. Thus, molar conductivity ( ) increases. Therefore, increases and k decreases. Answer: increases and k decreases