Chemistry - Hydrocarbon Question with Solution | TestHub

Hints : Such dehydrohalogenation follows ${\mathrm{E}}_2$ mechanism. The driving force of such reactions is the stability of alkene produced. Since tetriary alkyl halide can give more substituted alkene, it reacts fastest followed by secondary and primary i.e. $3^{\circ }>2^{\circ }>1^{\circ }$.