B. Carbon
- The Cathode Is A Central Carbon Rod, Surrounded By A Mixture Of Carbon And Manganese (IV) Dioxide (Mn02).
The material used for making the central rod in an electric cell has been carbon. Thus option B is correct.
An electrical cell has been used for causing the chemical change under the influence of the electric field. The cell has been consisted of the anode, cathode, and aqueous mixture for the electrical change to occur.
The electrical cell's anodic end has been the zinc. At the zinc end, there has been a reduction of the chemical.
The central rod or the cathode has been the carbon rod. The rod has been surrounded by the aqueous ammonium solution for electrical conductivity. Thus option B is correct.
For more information about the electrical cell, refer to the link:
https://brainly.com/question/12097805
