NEET2019Chemistry-Hydrocarbons

NEET 2019 Chemistry Alkenes MCQ Question

Type: MCQ-conceptual-Hard-Class 11

An alkene ‘A’ on reaction with O₃ and Zn⁻H₂O gives propanone and ethanol in equimolar ratio. Addition of HCl to alkene ‘A’ gives ‘B’ as the major product. The structure of product ‘B’ is ________.

A

H₃C−CH₂−CH=CH₂

B

H₃C−CH₂−C−CH₃ | Cl

C

H₃C−CH−CH | Cl CH₃

D

Cl−CH₂−CH₂−CH=CH₂

Correct Answer

Option C

Detailed Explanation

The ozonolysis products suggest the alkene is but2t^{-2}-ene. Addition of HCl follows Markovnikov's rule, giving²⁻chlorobutane.

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