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KI solution + strach + solution of salt ...

`KI` solution `+` strach `+` solution of salt `'X' rarr` Deep blye solution 'X' is/are:

A

`Na_(2)CO_(3)`

B

`NaNO_(2)`

C

`Ba(MnO_(4))_(2)`

D

`FeCI_(3)`

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The correct Answer is:
B, C, D
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