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[X]+H(2)SO(4) to [Y] a colourless gas wi...

`[X]+H_(2)SO_(4) to [Y]` a colourless gas with irritating smell, `[Y]+K_(2)Cr_(2)O_(7)+H_(2)SO_(4) to` green solution.
`[X]` and `[Y]` are respectively :

A

`X is SO_(3)^(2-)`

B

`X is CO_(3)^(2-)`

C

Y is `H_2S`

D

Y is `SO_2`

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The correct Answer is:
A, D
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