JEE Main 24 Feb 2021 Shift 1 Solved Paper

In the electrode potential series, only copper have positive value for electrode potential because copper has lower tendency than hydrogen to form ions. So, if standard hydrogen electrode (E‌Cell ‌=0) is connected to copper half-cell, the copper with be relatively less negative or less number of electrons.
‌E(Cu2+∕Cu)∘=+0.34V;‌‌E(Fe2+∕Fe)∘=−0.41V
‌ECo∘∕2∕Co∘=−0.28V;‌‌E(Zn2+∕Zn)∘=−0.76V
∴ Electrode potential of CuECu+2∕Cu∘ show positive value.