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A salt when heated with H(2)SO(4) librat...

A salt when heated with `H_(2)SO_(4)` librates violet gas which turns starch paper blue, salt may be

A

`NaNO_(3)`

B

NaBr

C

NaI

D

NaCl

Text Solution

Verified by Experts

The correct Answer is:
C
`2I^(-)+H_(2)SO_(4)+2H^(+) overset(Delta)to I_(2)+SO_(2)+2H_(2)O`(violet), `I_(2) + "Starch" to "Blue complex"`
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