1.

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

Answer»

`NaNO_(3)`
NaBr
NaI
NaCl

Solution :`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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