Preparation of potassium permanganate from MnO2 involves two step process

Question

Preparation of potassium permanganate from \(\mathrm{MnO}_{2}\) involves two step process in which the \(1^{\text {st }}\)step is a reaction with KOH and \(\mathrm{KNO}_{3}\) to produce

(1) \(\mathrm{K}_{4}\left[\mathrm{Mn}(\mathrm{OH})_{6}\right]\)

(2) \(\mathrm{K}_{3} \mathrm{MnO}_{4}\)

(3) \(\mathrm{KMnO}_{4}\)

(4) \(\mathrm{K}_{2} \mathrm{MnO}_{4}\)

Answer 1

Correct option is : (4) \(\mathrm{K}_{2} \mathrm{MnO}_{4}\) 

 \(\mathrm{MnO}_{2} \xrightarrow[\mathrm{KNO}_{3}, \Delta]{\mathrm{KOH}} \mathrm{K}_{2} \mathrm{MnO}_{4}\)