Which of the following reactions is/are represented correctly?

1.	Which of the following reactions is/are represented correctly?
Answer» `{:(Pb(OAc)_(2)+dil.H_(2)SO_(4)rarrunderset(("white ppt"))('A'darr)),(""darr),("""Soluble in conc." H_(2)SO_(4)):}` `{:(Hg_(2)(NO_(3))_(2)+Na_(2)CO_(3)(aq)rarrunderset(("yellow ppt"))('B'darr)),(""darrDelta),("""Black ppt."):}` `{:(2AgNO_(3)+2NH_(3)(aq)overset(+H_(2)O)rarrunderset(("brown ppt"))('C'darr)),(""darr),("""Soluble in aq".NH_(3)):}` `{:(4[Ag(NH_(3))_(2)]^(+)+N_(2)H_(4).H_(2)SO_(4)),(""darr),('D'(darr)+N_(2)(uarr)+6NH_(4).^(+)+2NH_(3).^(+)+SO_(4).^(2-)),(""darr),(""'D' "is soluble in conc" HNO_(3)):}` ANSWER :A::B::C::D

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