Q.
A. Zn | Zn+2(1M) || Cu2+ (1M) | Cu
B. Zn | Zn2+(1M) || Ag+ (1M) | Ag
C. Cu | Cu2+(1M) || Ag+ (1M) | Ag
D. Zn | Zn2+(1M) || Co2+ (1M) | Co
E. None of the above
Correct choice: B
Explanation: