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NEET Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Self Evaluation Test - Hydrocarbons

  • question_answer
    A compound (X) \[({{C}_{5}}{{H}_{8}})\] reacts with ammonical \[AgN{{O}_{3}}\] to give a white precipitate, and on oxidation with hot alkaline \[KMn{{O}_{4}}\] gives the acid, \[{{(C{{H}_{3}})}_{2}}CHCOOH\], therefore X is -

    A) \[C{{H}_{2}}=CH-CH=CH-C{{H}_{3}}\]

    B) \[C{{H}_{3}}-CH=CH-C{{H}_{2}}-C{{H}_{3}}\]

    C) \[{{(C{{H}_{3}})}_{2}}CH-C=CH\]

    D) \[{{(C{{H}_{3}})}_{2}}C=C\equiv C{{H}_{2}}\]

    Correct Answer: C

    Solution :

    [c] Compound X reacts with ammonical \[AgN{{O}_{3}}\]solution, so it must be a terminal alkyne. Formation of \[{{(C{{H}_{3}})}_{2}}CHCOOH\] on oxidation of X with hot alkaline \[KMn{{O}_{4}}\] further confirms that X is \[{{(C{{H}_{3}})}_{2}}CHC\equiv CH.\]


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