Question

Which of the following statement is incorrect about secondary batteries?

• A. Act as galvanic cell during discharge
• B. It can be recharged
• C. Act as electrolytic cell during charging
• D. It cannot be reused

Answer 1

The correct option is D It cannot be reused

In secondary batteries, the redox reaction that converts chemical energy into electrical energy can be reversed by passage of current.
After its use, they can be recharged by passing current through it in the opposite direction and can be used again.

These batteries behave as galvanic cells during discharge. Thus, converting chemical energy into electrical energy.
During charging, it will behave as electrolytic cells. Thus, converting electrical energy into chemical energy.

Examples of secondary batteries are Lead storage cell and Nickel-cadmium cell.

Hence, statement (b) is incorrect.