Which of the following statements about a galvanic cell is incorrect?

Determine True $(T)$ or False $(F)$ :
$1.$ Life of Nickel-Cadmium cell is less than lead storage cell.
$2.$ Dry cell is secondary cell while nickel-cadmium cell is primary cell.
$3.$ Both dry cell and nickel-cadmium cells are primary cell.

Give true $(T)$ and false $(F)$ for the following statements:
$(1)$ In a Daniell cell,$Zn$ is dissolved in the solution and $Cu$ is deposited.
$(2)$ In a Daniell cell,when an external $1.1 \ V$ potential is applied in the opposite direction,the reaction stops and no current flows.

The anode half-reaction occurring during the discharge of a lead storage battery is

What is an electrode and a half-cell? Explain their symbolic representation with a suitable example.

In a Mercury cell,which of the following acts as a cathode?