JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    An alkene, on ozonolysis gives formaldehyde and acetaldehyde. The alkene is : [BVP 2004]

    A) Ethene

    B) Propene

    C) Butene-1

    D) Butene-2

    Correct Answer: B

    Solution :

    Propene gives formaldehyde and acetaldehyde on ozonolysis. \[C{{H}_{2}}=CH.C{{H}_{3}}\xrightarrow{{{O}_{3}}}\] \[\overset{\underset{\hat{\ }}{\mathop{O}}\,}{\mathop{\overset{O}{\mathop{\overset{|}{\mathop{C}}\,}}\,{{H}_{2}}-\overset{O}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,H.C{{H}_{3}}-\] \[\underset{{{H}_{2}}{{O}_{2}}}{\mathop{\xrightarrow{Zn/{{H}_{2}}O}}}\,HCHO+C{{H}_{3}}CHO\]


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