Preparation of potassium permanganate from MnO2 involves a two step process in which the 1st step is a reaction with KOH and KNO3 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. \(\mathrm{K}_2 \mathrm{MnO}_4\)
Subtopic:  Detection of extra elements | Preparation of the Organic and Inorganic compounds |
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Level 2: 60%+
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