Statement about dry cell

 

Which statement about dry cell  not is correct?

1. A 6v cell transfer 6j of energy to every column of charge passing through it .

2.  Conventional current flows through a cell from its negative terminal to its positive terminal. 

3.  Inside a cell ,chemical energy is used to do work on electric charge .

4.  When a cell become discharged ,it has used it's stored electric charge 

ANS:- 4  ( in a battery charge is constant ,but energy decreases .)