Q.
A. Zn→Zn+2+2e-
B. MnO2 + NH+4 + →MnO (OH) + NH3
C. Zn+2 + 2 → ZN
D. MnO+2 → + 4H+ + 2 →Mn+2 + 2H2O
E. None of the above
Correct choice: B
Explanation: