The reaction in which oxidation and reduction reactions always occur simultaneouslycalled redox reaction or Oxidation-Reduction Reaction.The term ‘redox’ is a short form of reduction-oxidation.
Example: 2Al+ Fe2O3→2Fe + Al2O3
Let us identify oxidation and reduction with their agents:
2Al+ Fe2O3 →2Fe + Al2O3
Theabovereaction is a redox reaction. As oxidation and reduction are taking place simultaneously.
Fe2O3 is reduced to Fe whereas Al is oxidized to Al2O3