KVPY Sample Paper KVPY Stream-SX Model Paper-25

  • question_answer
    Consider the following
    \[C{{a}^{2}}+2{{e}^{-}}\xrightarrow{{}}Ca(s);E{}^\circ =-2.87V\]
    \[M{{g}^{2+}}2{{e}^{-}}\xrightarrow{{}}Mg(s);E{}^\circ =-236V\]
    \[N{{i}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Ni(s);E{}^\circ =-0.25V\]
    The reducing nature of the power of the metals increases in the order:

    A) \[Ca<Zn<mg<Ni\]                    

    B) \[Ni<Zn<Mg<Ca\]

    C) \[Zn<Mg<Ni<Ca\]

    D) \[Ca<mg<Zn<Ni\]

    Correct Answer: B

    Solution :

    Lesser the SRP value higher the reducing power.

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