AIIMS AIIMS Solved Paper-2001

  • question_answer

    Directions for: The questions consist of two statements each, printed as assertion and reason. While answering these questions you are required to choose any one of the following five responses A. If both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion. B. If both the Assertion and the Reason are true but the Reason is not a correct explanation of Assertion. C. If the Assertion is true but the Reason is false. D. If both the Assertion and the Reason are false. E. If Assertion is false but Reason is true.

    Assertion: Neopentane forms one mono- substituted compound. Reason: Neopentane is isomer of pentane.

    A)  A          

    B)  B           

    C)  C                           

    D)         D          

    E)         E

    Correct Answer: B

    Solution :

    Neopentane is an isomer of pentane \[\underset{C{{H}_{3}}}{\overset{C{{H}_{3}}}{\mathop{\underset{|}{\overset{|}{\mathop{{{H}_{3}}C-C-C{{H}_{3}}}}}\,}}}\,\] It forms only one substitution product due to the presence of four identical methyl groups on the carbon atom.


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