Which among the following is released when potassium permanganate is heated in the laboratory?

Potassium manganate

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Manganese dioxide

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Oxygen

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Hydrogen

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Solution

The correct options are
A Potassium manganate

B Manganese dioxide

C Oxygen

Potassium permanganate is used in the laboratory preparation of oxygen. When potassium permanganate is heated it undergoes decomposition to release potassium manganate, manganese dioxide and oxygen gas.
$2 K M n O_{4} \to K_{2} M n O_{4} + M n O_{2} + O_{2}$

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When potassium permanganate is heated it produces potassium manganate, manganese dioxide and oxygen gas. This is an example of ______ reaction.

C O_{2}

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A

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