Chemistry - Halogen Derivative Question with Solution | TestHub

${\left({\mathrm{CH}}_3\right)}_3\mathrm{C}-{\mathrm{O}}^{-}{\mathrm{K}}^{+}$ is a very strong base and a weak nucleophile due to its bulkiness. So it will give ${\mathrm{E}}_2$  elimination reaction as follows.