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Question

Oxygen gas can be prepared from solid KMnO4 by

A
treating the solid with H2 gas
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B
strongly heating the solid
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C
dissolving the solid in dilute H2SO4
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D
dissolving solid in dil HCl
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Solution

The correct option is B strongly heating the solid
KMnO4ΔMnO2+K2MnO4+O2
Therefore, oxygen gas can be prepared fron solid KMnO4 by strongly heating the solid.

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