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Pink colour of acidified KMnO(4) is deco...

Pink colour of acidified `KMnO_(4)` is decolourised but there is no evolution of any gas. This may happen with the compound containing the following acid radical.

A

`SO_(3)^(2-)`

B

`NO_(2)^(-)`

C

`S^(2-)`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
D
`SO_(3)^(2-)rarr SO_(4)^(2-), NO_(2)^(-) rarr NO_(3)^(-), S^(2-) rarr S`
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