An unknown alkyl halide (A) reacts with alcoholic KOH to produce a hydrocarbon (C₄H₈ ). Ozonolysis of the hydrocarbon forms one mole of propionaldehyde and one mole of formaldehyde. Suggest which organic structure among the following is the correct structure of the above alkyl halide (A) ?

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${CH}_{3} {CH}_{2} CH (Br) {CH}_{3}$

${CH}_{3} CH (Br) CH (Br) {CH}_{3}$

${CH}_{3} {CH}_{2} {CH}_{2} {CH}_{2} Br$

${BrCH}_{2} {CH}_{2} {CH}_{2} {CH}_{2} Br$

answer is A.

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Detailed Solution

Retroanalysis of ozonolysis products indicates that the alkene (C4H8) is but-1-ene, which can be formed by dehaydrohalogenation of But-1-ene.

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