JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    sThe major product formed when propene reacts with HBr in presence of peroxides is [NCERT 1980; CBSE PMT 1989]

    A) n-propyl bromide

    B) Isopropyl bromide

    C) n-propyl alcohol

    D) 1, 3-dibromopropane

    Correct Answer: A

    Solution :

    \[CH-CH=C{{H}_{2}}+HBr\xrightarrow{\text{peroxide}}\] \[\underset{n-\text{propyl}\,\text{bromide}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-B}}\,r\] In presence of peroxide addition takes place according to Anti Markownikoff?s rule and hydrogen atom goes to that carbon atom which is less hydrogenated.


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