Which of the following compound(s) gives brownish-black precipitate, on boiling with Na_(2)CO_(3) to their respective aqueous salt solution ?

Which of the following compound(s) gives brownish-black precipitate, o

1.	Which of the following compound(s) gives brownish-black precipitate, on boiling with Na_(2)CO_(3) to their respective aqueous salt solution ?
Answer» `PB(OH)_(2).2PbCO_(3)` `Hg_(2)CO_(3)` `Ag_(2)CO_(3)` `(NH_(4))_(2)CO_(3)` Answer :B::C