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A substance on treatment with dilute H(2...

A substance on treatment with dilute `H_(2)SO_(4)` liberates a colourless gas which produces `(I)` turbidity with baryta water and `(ii)` turns acidified dichromate solution green. The reaction indicates the presence of `:`

A

`CO_(3)j^(2-)`

B

`S^(2-)`

C

`SO_(3)^(2-)`

D

`NO_(2)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Na_(2)SO_(3)+2HCl("dil.")rarrNaCl+H_(2)O+SO_(2)`
`K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+3SO_(2)rarrK_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+H_(2)O`
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