A mixture consist of a yellow solid [A] and colourlesssolid[B]whichgiven lilac colourin flame. The miture given a blackprecipiate [C] on passing H_(2)S gas.Theprecipitate [C]is soluble in aqura regionandon evaporating and on addingSnCl_(2),gives greyish black precipitate [D]. Themisture solution on reacing with NH_(4)OH gives a brown precipiates.Thesodium extract ofthe mixturewith C Cl_(4)//FeCl_(3) givenviolet layer. The extract also givenyellow precicitate with AgNO_(3) solutionwhichis insoluble in NH_(3). The blackprecipitate [c] is of :

A mixture consist of a yellow solid [A] and colourlesssolid[B]whichgiv

1.	A mixture consist of a yellow solid [A] and colourlesssolid[B]whichgiven lilac colourin flame. The miture given a blackprecipiate [C] on passing H_(2)S gas.Theprecipitate [C]is soluble in aqura regionandon evaporating and on addingSnCl_(2),gives greyish black precipitate [D]. Themisture solution on reacing with NH_(4)OH gives a brown precipiates.Thesodium extract ofthe mixturewith C Cl_(4)//FeCl_(3) givenviolet layer. The extract also givenyellow precicitate with AgNO_(3) solutionwhichis insoluble in NH_(3). The blackprecipitate [c] is of :
Answer» Mercurous SULPHIDE Mercuric sulphide. Bismuth sulphide Lead sulphide. Solution :(B) `Hgl_(2)` reacts with `H_(2)S` to give a black precipitate [C] of merucric sulphide (HgS) `HgI_(2)+H_(2)Srarrunderset([C])underset("Black ppt.")(HgS)+2HI`