JEE Main 2025 — 7 April, Evening Shift — Question 1

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II:

1 M aqueous solutions of each of $\mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}$, $\mathrm{AgNO}_{3}, \mathrm{Hg}_{2}\left(\mathrm{NO}_{3}\right)_{2} ; \mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}$ are electrolysed using inert electrodes.

Given : $\quad \mathrm{E}_{\mathrm{Ag}^{+} / \mathrm{Ag}}^{0}=0.80 \mathrm{~V}, \quad \mathrm{E}_{\mathrm{Hg}_{2}^{2+} / \mathrm{Hg}}^{0}=0.79 \mathrm{~V}$, $\mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}}^{0}=0.24 \mathrm{~V}$ and $\mathrm{E}_{\mathrm{Mg}^{2+} / \mathrm{Mg}}^{0}=-2.37 \mathrm{~V}$

Statement I: With increasing voltage, the sequence of deposition of metals on the cathode will be $\mathrm{Ag}, \mathrm{Hg}$ and

Cu .

Statement II: Magnesium will not be deposited at cathode instead oxygen gas will be evolved at the cathode.

In the light of the above statements, choose the correct answer from the options given below :