Chemistry - Hydrocarbon Question with Solution | TestHub

Which of the following sequence of reactions (reagents) can be used for the conversion of ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2{\mathrm{CH}}_3$ into ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CH}={\mathrm{CH}}_2$ ?