Question

what is Redox reaction

Answer 1

Redox reactions are reactions in which one species is reduced and another is oxidized. Therefore the oxidation state of the species involved must change. These reactions are important for a number of applications, including energy storage devices (batteries), photographic processing, and energy production and utilization in living systems including humans.

Answer 2

Heya !!
When an oxidation reaction as well as a reduction reaction takes place together then the reaction is said to be Redox reaction.