TS EAMCET 6-Aug-2021 Shift 1 Question Paper

In the electrochemical series, Cu is below hydrogen. Hence, it has positive value of standard reduction potential (EM2+∕M).
The standard reduction potentials are
Ni(Z=28)‌⇒−0.257V
Cu(Z=29)‌⇒+0.337V
Cr(Z=24)‌⇒−0.90V
Ti(Z=21)‌⇒−1.63V
Highest reduction potential is of Cu as, it has positive value of reduction potential, while Ni,Cr and Ti have negative reduction potential value.