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NEET Sample Paper NEET Sample Test Paper-5

  • question_answer
    A solution contains \[F{{e}^{2+}}\], \[A{{g}^{+}},B{{i}^{3+}}\] and \[P{{b}^{2+}}\] ions in the same concentration. The value of reduction potential in volt are: \[Ag,\,A{{g}^{+}}=0.80\,V\] \[Fe,\,F{{e}^{3+}}=-0.44\,V\] \[Bi,\,B{{i}^{3+}}=0.21\,V\] \[Pb,\,P{{b}^{2+}}=-0.13\,V\] If sufficient voltage is applied to deposit any metal then the sequence of deposition will be

    A)  \[Ag,Bi,Pb,Fe\]              

    B)  \[Fe,Pb,Bi,Ag\]

    C)  \[Bi,Pb,Ag,Fe\]              

    D)  \[Pb,Ag,Bi,Fe\]

    Correct Answer: A

    Solution :

    Higher the reduction potential more easily it is reduced. Therefore, the sequence of deposition will be as: \[Ag,Bi,Pb,Fe\].


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