Distinguishing reagent between silver and lead salts

Question

(a) $H_2S$ gas
(b) dil HCl solution
(c) $NH_4Cl$ (solid) + $NH_4OH$ solution
(d) $NH_4Cl$ (solid) + $(NH_4)_2CO_3$ solution

Answer 1

Answer: dil HCl solution

 

Both Pb and Hg form white ppt. of their chlorides. But $PbCl_2$ is soluble in hot water while $Hg_2Cl_2$ does not dissolve in hot water.