Question

Iron nails are dipped into blue copper sulphate solution. After some time iron nails are:; 1) dissolved and blue colour is discharged; 2) not dissolved but blue colour is discharged; 3) dissolved but blue colour is not discharged; 4) not dissolved and blue colour is not discharged~

Answer 1

1 is right because when iron nails are dipped then iron displaced copper and form ferrous sulfate the copper freeze on iron nail and when copper nail is put out of beaker there is reddish brown coloured tiny particles of copper be found on iron nail