A mixture of two salts is used to prepare a solution S , which gives the following results: White   precipitate s   only ← Room   temperature Dilute   NaOH ( aq ) S aq .   solution   of   the   salts → Room   temperature Dilute   HCl aq White   precipitate s   only The correct option s for the salt mixture is(are)
B. Pb NO 3 2 and Bi NO 3 3
P b 2 + → dil . HCl PbCl 2 (white precipitate) P b 2 + → dil . NaOH Pb OH 2 (white precipitate) Bi 3 + → dil   HCl BiCl 3 (water-soluble) Bi 3 + → dil .   NaOH Bi OH 3 (white precipitate) Hg 2 + → dil . HCl HgCl 2 (water-soluble) Hg 2 + → dil .   NaOH Hg OH 2 (yellow precipitate) Ag + → dil .   HCl AgCl (white precipitate) Ag + → dil .   NaOH AgOH (brown precipitate) Zn 2 + → dil .   HCl ZnCl 2 (water-soluble) Zn 2 + → dil   . NaOH Zn OH 2 (white precipitate)
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