JEE Previous Year Question

The standard reduction potentials at 295 K for the following half cells are given below:
$N{O}_3^{-}$ + $4H^{+}$ + 3e- $\to$ NO(g)+2H2O E° = 0.97 V
${\mathrm{V}}^{2+}$(aq)+$2e^{-}$ $\to$ V(s) E° = -1.19 V
${\mathrm{Fe}}^{3+}$(aq)+3e- $\to$ Fe(s) E° = -0. 04 V
${\mathrm{A}}_g^{+}$(aq)+e- $\to$ Ag(s) E° = 0.80 V
${\mathrm{Au}}^{3+}$(aq)+3e- $\to$ Au(s) E° = 1. 40 V
The number of metal(s) which will be oxidised by $N{O}_3^{-}$ in aqueous solution is_____.

Topic: JEE PYQ

Answer: 3. Full step-by-step solution below.