(i) A white solid A, on being strongly heated, leaves a residue which is yellow while hot and white when cold ii) The solid A, insoluble in water, dissolves in dilute HCI to give a solution B and a gas which does not affect acidified dichromate paper but turns baryta water milky. iii) When H_(2)S is passed through the solution B, a white precipitate C is obtained iv) The precipitate C dissolves in dilute HCI to give a solution which, when treated with an NaOH solution, gives a white precipitate. The final precipitate dissolves in an excess of NaoH form a solution D. This alkaline solution, on acidification with acetic acid followed by treatment with H_(2)S, gives the precipitate C. The salt A is a

(i) A white solid A, on being strongly heated, leaves a residue which

1.	(i) A white solid A, on being strongly heated, leaves a residue which is yellow while hot and white when cold ii) The solid A, insoluble in water, dissolves in dilute HCI to give a solution B and a gas which does not affect acidified dichromate paper but turns baryta water milky. iii) When H_(2)S is passed through the solution B, a white precipitate C is obtained iv) The precipitate C dissolves in dilute HCI to give a solution which, when treated with an NaOH solution, gives a white precipitate. The final precipitate dissolves in an excess of NaoH form a solution D. This alkaline solution, on acidification with acetic acid followed by treatment with H_(2)S, gives the precipitate C. The salt A is a
Answer» sulphite CARBONATE sulphide chloride Solution :SALT A is carbonate