Q.

Potassium manganate (K2MnO4) is formed when

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a

potassium permanganate reacts with H2SO4

b

potassium hydroxide with K2CO3 and air

c

Chlorine is passed through aqueous KMnO4 solution

d

Manganese dioxide is fused with potassium hydroxide in air

answer is B, C.

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Detailed Solution

.

How will you obtain pure potassium permanganate (KMnO4) crystals from its  ore, pyrolusite? Give the step involved and the reactions.
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