1.

A salt on treatment with dil. HCl gives a pungent smelling gas and a yellow precipitate. The slt gives green flame when tested. The salt solution gives a yellow precipitate with potassium chromate. The salt is

Answer»

`NiSO_(4)`
`BaS_(2)O_(3)`
`PbS_(2)O_(3)`
`CuSO_(4)`

SOLUTION :`Ba^(+2)+2CH_(3)COO^(-) to (CH_(3)COO)_(2)Ba`
`BaS_(2)O_(3)` GIVES `SO_(2)` gas withdil. HCl and also yellow ppt. of barium chromate.
`(CH_(3)COO)Ba+K_(2)CrO_(4) to 2CH_(3)COOK+ UNDERSET("yellow ppt.")(BaCrO_(4))darr`


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