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A salt solution reacts with some drops o...

A salt solution reacts with some drops of chloroform and the mixture is shaken with chlorine water. The chloroform layer becomes violet. Salt solution contains.

A

`NO_(2)^(-)` ion

B

`NO_(3)^(-)` ion

C

`Br^(-)`ion

D

`I^(-)`ion

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The correct Answer is:
D
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