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DUMET Medical DUMET Medical Solved Paper-2011

  • question_answer
    Given the following reactions involving A, B, C and D (i) \[C+{{B}^{+}}\to {{C}^{+}}+B\] (ii) \[{{A}^{+}}+D\to \] No reaction (iii) \[{{C}^{+}}+A\to \] No reaction (iv) \[D+{{B}^{+}}\to {{D}^{+}}+B\] The correct arrangement of A, B, C, D in order of their decreasing ability as reducing agent

    A)  D > B > C > A

    B)  A > C > D > B

    C)  C > A > B > D

    D)  C > A > D > B

    Correct Answer: D

    Solution :

    \[C+{{B}^{+}}\xrightarrow{{}}{{C}^{+}}+B;\] \[\therefore \,\,C>B\] (reducing power) \[{{A}^{+}}+D\xrightarrow{{}}\] No reaction; \[\therefore \,\,A>D\] (reducing power) \[{{C}^{+}}+A\xrightarrow{{}}\] No reaction; \[\therefore C>A\] (reducing power) \[D+{{B}^{+}}\xrightarrow{{}}{{D}^{+}}+B;\] \[\therefore \,\,D>B\] (reducing power) Hence, order of reducing power \[=C>A>D>B\].


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