Answer:
Option A
Explanation:
Plan This problem is based on characteristics of salt bridge
Functions of salt bridge
(i) It connects the two half cells and completes and complete the cell circuit
(ii) It keeps the solutions of two half-cells and complete the cell circuit but does not participate chemically in the cell reaction.
(iii) It maintains the diffusion of ions from one electrode to another electrode.
(iv) A cell reaction may also occur in absence of salt bridge, sometimes, both the electrodes dip in the same electrolyte solution and in such cases we do not require a salt bridge." So, option (c) is incorrect.
(v) This prevent mixing of two electrolytic solutions hence, option (d) is incorrect choice
Hence, correct choice is (a)
