Which of the following alkyl halides gives a mixture of alkenes on dehydrohalogenation?

Step-by-step solution

Dehydrohalogenation of alkyl halides involves the removal of a hydrogen atom from a -carbon and a halogen atom from the -carbon to form an alkene. For n-propyl bromide ( CH₃-CH₂-CH₂-Br ), there is only one -carbon, yielding only propene. For isopropyl bromide ( CH₃-CH(Br)-CH₃ ), the two -carbons are equivalent, yielding only propene. For secondary butyl bromide ( CH₃-CH₂-CH(Br)-CH₃ ), there are two non-equivalent -carbons. Elimination of hydrogen from these different -carbons yields a mixture of 1-butene and 2-bute