Question

Pyrolusite is MnO₂ used to prepare KMnO₄ . Steps are, MnO₂ + I → I MnO₄^2-  + II → MnO₄^- .

Steps I and II are respectively :

(A) fuse with KOH / air and electrolytic oxidation.

(B) fuse with KOH / KNO₃ and electrolytic oxidation.

(C) fuse with conc. HNO₃ / air and electrolytic reduction.

(D) dissolve in H₂O and oxidation.

Answer 1

Correct option (A)(B)

Explanation:

Fuse with KOH in presence of air or oxidising agents like KNO₃ , KClO₃ etc.