Question: 
Identify the incorrect statement from the options below for the above cell:
If $\mathrm{E}_{\mathrm{ext}}>1.1 \mathrm{~V}, \mathrm{Zn}$ dissolves at $\mathrm{Zn}$
electrode and $\mathrm{Cu}$ deposits at $\mathrm{Cu}$ electrode
If $\mathrm{E}_{\text {ext }}>1.1 \mathrm{~V}, \mathrm{e}^{-}$flows from $\mathrm{Cu}$ to $\mathrm{Zn}$
If $\mathrm{E}_{e x t}=1.1 \mathrm{~V}$, no flow of $\mathrm{e}^{-}$or current occurs
If $\mathrm{E}_{\mathrm{ext}}<1.1 \mathrm{~V}, \mathrm{Zn}$ dissolves at anode and $\mathrm{Cu}$ deposits at cathode
Correct Option: 1,
Solution:
$\mathrm{E}_{\text {cell }}^{\mathrm{o}}=0.34-(-0.76)$
$=1.10 \mathrm{volt}$
If $E_{e x t}>1.10$ volt
$\mathrm{Cu} \rightarrow$ Anode
$\mathrm{Zn} \rightarrow$ Cathode
If $\mathrm{E}_{\mathrm{ext}}=1.10$ volt
$\mathrm{Zn} \rightarrow$ Anode
$\mathrm{Cu} \rightarrow$ Cathode