Which of the following salts will evolve...

Which of the following salts will evolve halogen on treatment with con. `H_(2) SO_(4)`

A

NaCl

B

NaBr

C

`CaCl_(2)`

D

KI

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The correct Answer is:

B, D

Bromides & Iodies release halogen but chlorides HCl with Con. `H_(2)SO_(4)`

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