Given below are two reactions, involved in the commercial production of dihydrogen $\left(\mathrm{H}_2\right)$. The two reactions are carried out at temperature " $\mathrm{T}_1$ " and " $\mathrm{T}_2$ " respectively
$\mathrm{C}(\mathrm{~s})+\mathrm{H}_2 \mathrm{O}(\mathrm{~g}) \xrightarrow{\tau_1} \mathrm{CO}(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g})$
$\mathrm{CO}(\mathrm{g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g}) \xrightarrow[\text { Catalyst }]{\mathrm{T}_2} \mathrm{CO}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g})$
The temperature $T_1$ and $T_2$ are correctly related as