A white precipitate insoluble in cone `HNO_(3)` is formed when aqueous solution of X `NaOH` treated with barium chlorid and brom

Correct Answer - b
`SO_(2) + 2NaOH rarr Na_(2)SO_(3) +H_(2)O`
`Na_(2)SO_(3) + BaCI_(2) rarr BaSO_(4) + 2NaCI`
`Br_(2) + H_(2)O rarr 2HBr + [O]`
`BaSO_(3)+[O]rarrunderset("Whiteppt.(insoluble in conc."HNO_(3))(BaSO_(4))`

A white precipitate insoluble in cone `HNO_(3)` is formed when aqueous solution of X `NaOH` treated with barium chlorid and bromic water .The X is

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