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 greyish black precipitate [D] 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 greyish black precipitate [D] is of
Answer» mercury SILVER LEAD NONEOF these Solution :(a) In aqua regia, `HgI_(2)` is converted to `HgCl_(2)` which is then reduced by `SnCl_(2)` to mercury [D] which is greyish black in colour `HgCl_(2)+SnCl_(2)rarrunderset("black[D]")UNDERSET("Greyish")(Hg)+SnCl_(4)`