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When KMnO(4) solution is added to hot ox...

When `KMnO_(4)` solution is added to hot oxalic acid solution the decoloursitation is slow in the beginning but becomes instantaneous after some time. This is because

A

`Mn^(2+)` acts as autocatalyst

B

`CO_(2)` is formed as the product

C

Reaction is exothermic

D

`MnO_(4)^(-)` catalyses the reaction.

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The correct Answer is:
A
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