JEE Main 2025 — Ionic Equilibrium Question with Solution

The molar conductance of an infinitely dilute solution of ammonium chloride was found to be $185\mathrm{S}{\mathrm{cm}}^2{\mathrm{mol}}^{-1}$ and the ionic conductance of hydroxyl and chloride ions are 170 and $70\mathrm{S}{\mathrm{cm}}^2{\mathrm{mol}}^{-1}$, respectively. If molar conductance of 0.02 M solution of ammonium hydroxide is $85.5\mathrm{S}{\mathrm{cm}}^2{\mathrm{mol}}^{-1}$, its degree of dissociation is given by $x\times 10^{-1}$. The value of $x$ is __________ . (Nearest integer)