Which of the following reactions is possible at the anode?

  • A
    $F_2 + 2e^- \rightarrow 2F^-$
  • B
    $2H^+ + \frac{1}{2}O_2 + 2e^- \rightarrow H_2O$
  • C
    $Fe^{2+} \rightarrow Fe^{3+} + e^-$
  • D
    $Cu^{2+} + 2e^- \rightarrow Cu(s)$

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Which of the following metals will not react with a solution of $CuSO_4$?

Which of the following formulae is used to obtain the value of $E_{\text{cell}}^{\circ}$ for a reaction taking place in a Dry cell?

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