A sulphide ore (A) on roasting leaves a residue (B). (B) on heating with chlorine gives (C), soluble in water, addition of excess potassium iodide to a solution of (C) gives a solution (D). A brown precipitate (E) is formed when a solution of ammonium sulphate is added to an alkaline solution of (D). Identify (A) to (E).

A sulphide ore (A) on roasting leaves a residue (B). (B) on heating wi

1.	A sulphide ore (A) on roasting leaves a residue (B). (B) on heating with chlorine gives (C), soluble in water, addition of excess potassium iodide to a solution of (C) gives a solution (D). A brown precipitate (E) is formed when a solution of ammonium sulphate is added to an alkaline solution of (D). Identify (A) to (E).
Answer» Solution :`{:(underset((A))(HgS),overset("roasting")rarr,underset((B))(HgO),overset(Cl_(2))rarr,underset((C))(HgCl_(2)),overset("excess of KI"-)rarr,""underset((D))(K_(2)HgI_(4))),(,,,,,,"alkaline" DARR (NH_(4))SO_(4)),(,,,,,,underset((E))underset("BROWN ppt.")(HgO.Hg(NH_(2))I)):}`