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CMC Medical CMC-Medical VELLORE Solved Paper-2013

  • question_answer
    The acidic, basic or amphoteric nature of\[M{{n}_{2}}{{O}_{7}},\]\[{{V}_{2}}{{O}_{5}}\] and\[CrO\]are respectively

    A)  acidic, amphoteric, basic

    B)  acidic, acidic, basic

    C)  basic, amphoteric acidic

    D)  acidic, basic, basic

    Correct Answer: A

    Solution :

                    Acidic character increases with increase in oxidation state. \[M{{n}_{2}}{{O}_{7}}-\]acidic (Mn = +7) \[{{V}_{2}}{{O}_{5}}-\]amphoteric (V = +5) \[CrO-\]basic (Cr = +2)


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