In Dry cell, cathode is made up of_______?
Correct answer: B. Carbon (Graphite)
- A. Zinc
- B. Carbon (Graphite)
- C. ZnCl²
- D. MnO²(Pyrolusite)
Explanation
In a zinc-carbon dry cell, the graphite rod serves as the cathode and conducts electrons from the manganese dioxide cathodic mixture. Students may choose manganese dioxide because it participates in the cathode reduction reaction, but the electrode itself is the carbon rod.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Redox Reactions questions
Cations possess __________ charge?
Ozone is formed in the upper layer of the atmosphere from oxygen by action of:____________?
Which of the following is used in photography?
Which of the following is non spontaneous cell?
Nitrate (NO3) ions are obtained by the process of __________?
When SO2 solution is passed over which of the following it turns green?