On the basis of position in the electrochemical series,the metal which does not displace hydrogen from water and acid is

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: In equation $\Delta_r G = -nFE_{\text{cell}}$,the value of $\Delta_r G$ depends on $n$.
Reason $R$: $E_{\text{cell}}$ is an intensive property and $\Delta_r G$ is an extensive property.
In the light of the above statements,choose the correct answer from the options given below:

For the electrochemical cell $M \mid M^{2+} \parallel X \mid X^{2-}$,if $E^{\circ}_{(M^{2+} / M)} = 0.46 \ V$ and $E^{\circ}_{(X / X^{2-})} = 0.34 \ V$,which of the following is correct?

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

The chemical reaction taking place at the anode of a cell is

$A$ button cell used in watches functions as follows:
$Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightarrow 2Ag_{(s)} + Zn^{2+}_{(aq)} + 2OH^{-}_{(aq)}$
If the half-cell potentials are:
$Zn^{2+}_{(aq)} + 2e^- \rightarrow Zn_{(s)} \,;\, E^o = -0.76 \, V$
$Ag_2O_{(s)} + H_2O_{(l)} + 2e^- \rightarrow 2Ag_{(s)} + 2OH^{-}_{(aq)} \,;\, E^o = 0.34 \, V$
The cell potential will be $..........$ $V.$