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Match the following column of precipitat...

Match the following column of precipitate/mass listed in Column I with the reagent (s) listed in Column II:

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The correct Answer is:
A, B, C, D
`Pb^(2+):Pb^(2+)tounderset("Yellow")(Pbl_(2))darr+2K^(+)`
`Pb^(2+)+K_(2)CrO_(4)tounderset("Yellow")(PbCrO_(4))darr+2K^(+)`
`Ag^(+): 2Ag^(+)+2NaOHto underset("Brown")(Ag_(2)O)darr+H_(2)O+2Na^(+)`
`2Ag^(+)+H_(2)Stounderset("Black")(Ag_(2)Odarr+2H^(+)`
`Hg_(2)^(2+):H_(2)^(2+)+2NaOHtounderset("Black")(Hg_(2)O)+H_(2)O+2Na^(+)`
`Hg_(2)^(2+)+H_(2)Sto underset("Black")ubrace(Hg darr+HgSdarr)+2H^(+)`
`Hg_(2)^(2+)+2Kl to Hg_(2)l_(2)+2K^(+)`
`Hg_(2)l_(2)+2Kl to K_(2)[Hgl_(4)]+underset("Black")(Hg)darr`
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