Question

notes of chemistry chapter redox reaction

Answer 1

Chemical reactions which involves both oxidation as well as reduction process simultaneously, are known as redox reactions (‘red’) from reduction and ‘ox’ from oxidation). All these reactions are always accompanied by energy change in the form of heat, light or electricity.Types of Redox Reactions
(i) Intermolecular redox reactions In such reactions, oxidation and reduction take place separately in two compounds.
ii) Intramolecular redox reactions In these reactions, oxidation and reduction take place in a single compound. 
(iii) Disproportionation reactions These reactions involve reduction and oxidation of same element of a compound.