Pick out the wrong statement

Options

A. electrode potential of the two half cells becomes equal
B. whole of the metal used as cathode is consumed
C. whole of the metal used as anode is consumed
D. molar concentrations in the two half cells

Answer

B,C,D

Explanation

An electrochemical cell stops working when
`E_("anode")=E_("cathode")`
at this point none of the electrolyte or electrode used is fully consumed.