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Which is true statement about KmnO4?...

Which is true statement about `KmnO_4`?

A

Its solution is unstable in acidic medium.

B

It has purple colour.

C

`MnO_4^(ɵ)` changes to `Mn^(2+)` in basic solution.

D

It is self indicator in `Fe&(2+)` or `C_2O_4^(2-)` titration.

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The correct Answer is:
a,b,d
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