1.

A whitecrystalline salt(A)react withdiluteHCItoliberate asuffocating gas (B )andturnspotassium dichromateacidifiel withdil H_(2) SO_(4) to a greencolouredsolution( c)A, Band Carerespectively

Answer»

`Na_(2)SO_(3),SO_(2),Cr_(2) (SO_(4))_(3)`
`Na_(2)S_(2)O_(3) ,SO_(2),Cr_(2)(SO_(4))_(3)`
`Na_(2)S, SO_(2),Cr_(2) (SO_(4))_(3)`
`Na_(2)SO_(4) ,SO_(2) ,Cr_(2) (SO_(4))_(3)`

ANSWER :A


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