Chemistry · 2020
JEE Main · 4 September 2020, Shift 1 · Q27
E_Cu^2+ ∣ Cu^°=+0.34 V; E_Zn^2+ ∣ Zn^°=-0.76 V Identify the incorrect statement from the options below for the above cell:
$$\begin{aligned}
& \mathrm{E}_{\mathrm{Cu}^{2+} \mid \mathrm{Cu}}^{\circ}=+0.34 \mathrm{~V} \\
& \mathrm{E}_{\mathrm{Zn}^{2+} \mid \mathrm{Zn}}^{\circ}=-0.76 \mathrm{~V}
\end{aligned}
$$
Identify the incorrect statement from the options below for the above cell :Official answer
(4)
If $\displaystyle \mathrm{E}_{\text {ext }}>1.1 \mathrm{~V}, \mathrm{Zn}$ dissolves at Zn electrode and Cu deposits at Cu electrode
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.