$A$ solution of copper sulphate may be kept safely in the container made up of

Which of the following statements is true for a standard electrochemical cell consisting of $H_2$ and $Cu$ electrodes?

In the button cells widely used in watches and other devices,the following reaction takes place:
$Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightarrow Zn^{2+}_{(aq)} + 2Ag_{(s)} + 2OH^{-}_{(aq)}$
Determine $\Delta_r G^\Theta$ and $E^\Theta$ for the reaction.

Explain the redox reaction of electrodes with the example of a Daniell cell.

What is the correct order of chemical reactivity with water according to the electrochemical series?

Give the symbolic representation of the following galvanic cells:
$(i)$ Daniell cell
$(ii)$ Copper-Silver cell