Question

In an electro chemical process, a salt bridge is used

a) to maintain electro neutrality in each solution.

b) to complete the circuit so that current can flow

c) as an oxidising agent

d) as a colour indicator

• A. only a is correct
• B. a and b are correct
• C. a, b and c are correct
• D. all are incorrect

Answer 1

The correct option is B a and b are correct

The ions of cathode compartment and anode compartment flow through salt bridge. This maintains the electrical neutrality in two solutions. Hence option (a) is correct. The salt bridge acts as an electrical contact between two solutions. Thus the electrical circuit is complete. This allows the passage of current. Hence option (b) is correct.

Hence, option B is correct.