NEET 2024 Chemistry, question 95.

Consider the following reaction in a sealed vessel at equilibrium with concentrations of N$_2$ = $3.0\times10^{-3}$ M, O$_2$ = $4.2\times10^{-3}$ M and NO = $2.8\times10^{-3}$ M.

2NO$_{(g)}$ $\rightleftharpoons$ N$_{2(g)}$ + O$_{2(g)}$

If 0.1 mol L$^{-1}$ of NO$_{(g)}$ is taken in a closed vessel, what will be degree of dissociation ($\alpha$) of NO$_{(g)}$ at equilibrium?