Question

iron which is discharged at the cathode during the electrolysis of copper sulphate solution using copper electrons as anode​

Answer 1

When Copper(II) sulfate is electrolysed with a copper anode electrode (the cathode can be carbon or copper), the copper deposit on the cathode (–) equals the copper dissolves at the anode (+). Therefore the blue colour of the Cu2+ ions stays constant because Cu deposited = Cu dissolved.