Electrolysis

The diagram shows apparatus for plating a spoon with silver.
Which statement is not correct?

Which metal could not be used for electroplating by using an aqueous solution?
 

Which apparatus could be used to electroplate an iron nail with copper? 

The diagram shows a method used to copper-plate a pan

Which equation represents the reaction at the cathode?

Which apparatus is used to plate a nickel object with silver?

Iron can be electroplated with zinc to make it resistant to corrosion. Which row about electroplating iron with zinc is correct?

\[
\begin{array}{|c|c|c|c|}
\hline & \begin{array}{c}
\text { positive electrode } \\
\text { (anode) }
\end{array} & \begin{array}{c}
\text { negative electrode } \\
\text { (cathode) }
\end{array} & \text { electrolyte } \\
\hline \text { A } & \text { iron } & \text { zinc } & \text { iron nitrate } \\
\text { B } & \text { iron } & \text { zinc } & \text { zinc nitrate } \\
\text { C } & \text { zinc } & \text { iron } & \text { iron nitrate } \\
\text { D } & \text { zinc } & \text { iron } & \text { zinc nitrate } \\
\hline
\end{array}
\]