Question

An electrochemical cell generally consists of a cathode and an anode. Which of the following statements is correct with respect to the cathode?

(a) Oxidation occurs at the cathode

(b) Electrons move into the cathode

(c) Usually denoted by a negative sign

(d) Is usually made up of insulating material

I had been asked this question in exam.

I'd like to ask this question from Electrochemical Cells topic in portion Electrochemistry of Chemistry – Class 12

Answer 1

Right choice is (b) Electrons move into the cathode

The best I can explain: Cathodes are usually metal electrodes. It is the electrode where reduction takes place. The cathode is the positive electrode in a galvanic cell and a negative electrode in an electrolytic cell. Electrons move into the cathode.