A metal sulphide (A) gives (B) gas with rotten egg and (C) a colourless sulphates, when treated with dil. H_(2)SO_(4) (B) reacts with K_(2)Cr_(2)O_(7)//H^(+) to form (D) a white grey element. (D) burns in oxygen to yield (E) a colourless gas. If (B) is added in (E), it gives (D) and colourless liquid, which turns anhydrous CuSO_(4) blue. (C) gives a precipitate with NH_(3(aq)) or NaOH which dissolves in excess of NaOH. E is

A metal sulphide (A) gives (B) gas with rotten egg and (C) a colourles

1.	A metal sulphide (A) gives (B) gas with rotten egg and (C) a colourless sulphates, when treated with dil. H_(2)SO_(4) (B) reacts with K_(2)Cr_(2)O_(7)//H^(+) to form (D) a white grey element. (D) burns in oxygen to yield (E) a colourless gas. If (B) is added in (E), it gives (D) and colourless liquid, which turns anhydrous CuSO_(4) blue. (C) gives a precipitate with NH_(3(aq)) or NaOH which dissolves in excess of NaOH. E is
Answer» `H_(2)S` `SO_(3)` `SO_(2)` NONE of these Solution : `UNDERSET((A))(ZnS)+DIL. H_(2)SO_(4) to underset((B))(H_(2)S)+underset((C))(ZnSO_(4))` , `H_(2)S OVERSET(K_(2)Cr_(2)O_(7)H^(+))to underset((D))(S) overset(O_(2))to underset((E))(SO_(2))`