Question

in the reaction fe + CU S o4 gives a fes o4 + CU what is reduced and what is oxidized which is the oxidizing agent​

Answer 1

Cu goes from ON. +2 to 0. It has gained electrons, so it is reduced. Cu2+ is the oxidising agent. 

Cu goes from ON. +2 to 0. It has gained electrons, so it is reduced. 

You know Fe is oxidized, because its oxidation nunmber increases from 0 to +2.