Alkaline oxidative fusion of MnO 2 gives " A " which on electrolytic oxidation in alkaline solution produces B . A and B respectively are:

Step-by-step solution

The alkaline oxidative fusion is a redox reaction (undergoes both oxidation and reduction simultaneously) in which a compound undergoes fusion with itself only, in the presence of a base or an alkaline solution. Electrolysis is a chemical process where an electric current is passed through an electrolyte, causing a non-spontaneous chemical reaction to occur, typically resulting in the decomposition of the electrolyte into its constituent elements or ions. Alkaline oxidative fusion of MnO 2 : 2 MnO 2 + 4 OH - + O 2