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Question

Which alkene reacts with HCl to form a halide that gives CH₃CH₂CH=CH₂ on elimination?

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Explanation

CH₃CH=CHCH₃ (2-butene) with HCl forms CH₃CHClCH₂CH₃ , which eliminates HCl with alcoholic KOH to form 1-butene ( CH₃CH₂CH=CH₂ ).

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