NEET Sample Paper NEET Sample Test Paper-19

  • question_answer The metal that does not displace hydrogen from an acid is

    A)  Zn                

    B)  Ca

    C)  Al                

    D)  Hg

    Correct Answer: D

    Solution :

    Hg does not displace.\[{{H}_{2}}\]forms acid, as it is less reactive than\[{{H}_{2}}\](lies below\[{{H}_{2}}\]in electrochemical series) or it has more reduction potential than\[{{H}_{2}}\]so it cannot reduce \[{{H}^{+}}\]to \[{{H}_{2}}.\] Hence, the correct option is [d].

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