NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

For a reversible reaction $A \rightleftharpoons B$, the $\Delta \mathrm{H}_{\text {forward reaction }} =20 \, \mathrm{kJ} \, \mathrm{mol}^{-1}$. The activation energy of the uncatalyzed forward reaction is $300 \, \mathrm{kJ} \, \mathrm{mol}^{-1}$. When the reaction is catalysed keeping the reactant concentration same, the rate of the catalysed forward reaction at $27^{\circ} \mathrm{C}$ is found to be same as that of the uncatalyzed reaction at $327^{\circ} \mathrm{C}$. The activation energy of the catalysed backward reaction is _____ $\mathrm{kJ} \, \mathrm{mol}^{-1}$.