Geo-Scientist Prelims 2025 Chemistry Q72: A conductivity cell was calibrated using 0.01 M KCl (k = 1.4 × 10⁻³…

A conductivity cell was calibrated using 0.01 M KCl (k = 1.4 × 10⁻³ S cm⁻¹) in the cell, and the measured resistance was 700 Ω. When the cell was filled with 0.01 M AgNO₃ solution, the cell had a resistance of 800 Ω. The molar conductivity of AgNO₃ solution is :

1. (a) 0.1225 S cm² mol⁻¹
2. (b) 122.5 S cm² mol⁻¹
3. (c) 0.8163 S cm² mol⁻¹
4. (d) 816.3 S cm² mol⁻¹