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Name the gas can readily de-colourise ac...

Name the gas can readily de-colourise acidified`KMnO_4` solution

A

`SO_2`

B

`NO_2`

C

`P_2O_5`

D

`CO_2`

Text Solution

Verified by Experts

The correct Answer is:
A
Hint : Acidified `KMnO_4` oxidise So, to `H_2SO_4` and `KMnO_4` itself is reduced to `MnO_2`.
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