Select the incorrect statements.
When a metallic electrode is dipped into the solution of its electrolyte, a half-cell is formed
A metallic wire is used to connect the two half-cells
A salt bridge is required when both the electrodes are dipped in the solution of same electrolyte
Salt bridge connects the electrolytes of two half-cells
No salt bridge is required when both the electrodes are dipped in the solution of same electrolyte'