Distinguish between direct and indirect redox reactions.

Explanation

`{:("S.No.","Direct redox reaction","Indirect redox reaction"),((i),"Redox reaction occure in the same vessel","Redox reaction in which oxidation and"),(,,"reduction occure in different vessels"),((ii),"No useful work can be obtained,","Useful work can be obtained"),((iii),"Electrical energy of the reaction appear as heat.","Chemical energy is converted in to electrical energy"):}`