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Q.

The gas liberated by heating potassium permanganate (KMnO4) is _______.

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a

Nitrogen

b

Methane

c

Oxygen

d

Carbon

answer is C.

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Detailed Solution

Potassium permanganate is a strong oxidizing agent and when it is heated it produces manganese dioxide and potassium manganate. Oxygen gas is liberated.

Heating: KMnO4K2MnO4+MnO2+O2.

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