Which of the following can be used to reduce local action in a Laclanche cell?
A
A carbon rod as the positive pole
B
Pure zinc as the negative pole
C
Potassium permanganate solution in contact with the positive pole
D
common salt solution
Verified Correct Answer: C.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #27662)