1.

`[X]+H_(2)SO_(4) rarr [Y]` a colourless gas with irritating smell `[Y] + K_(2)Cr_(2)O_(7) + H_(2)SO_(4) rarr` green solution `[X]` and `[Y]` areA. `SO_3^(2-), SO_2`B. `Cl^(-) , HCl`C. `S^(2-) , H_2S`D. `CO_3^2, CO_2`

Answer» Correct Answer - A
`SO_3^(2)+underset(("from" H_2SO_4))(2H^(+))toSO_2+H_2O`
`3SO_2+Cr_2O_7^(2)+2H^(+)to3SO_4^(2)+underset(("green"))(2Cr^(3+))+H_2O`


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