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Which of the following radical(s) on rea...

Which of the following radical(s) on reaction with dil HCl liberate(s) gas which decolourize(s) acidified `KMnO_(4)` solution.

A

`S_(2)O_(3)^(2-)`

B

`NO_(2)^(-)`

C

`Br^(-)`

D

`HCO_(3)^(-)`

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The correct Answer is:
A, B
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