Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydrixides) two ores [X] and [Y] show the following reactivity? (a) [X[] on calcination gives a black solid (S), water and a colourless gas which produces milkiness when passed through lime water. But this colourless gas does not decolorise acidified KMnO_(4). (b) [X] dissolved in diliute HCl. On reaction with KI gives a white precipitate(P) and iodine gas. (c) [Y] on roasting at high temperature gives metal (M) and gas (G_(1)) which turns starch iodate solution blue. (d) [Y] on reaction with dilute HCl gives a white precipatate (MS) and another gas (G_(1)) to precipitate colloidal sulpher in presence of moisture. M,S[X],[Y] gives greenish blue flame. Which of the following statements is correct about [Y]?

Amongst the various ores of a metal (M) (sulphide, carbonates, oxides,

1.	Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydrixides) two ores [X] and [Y] show the following reactivity? (a) [X[] on calcination gives a black solid (S), water and a colourless gas which produces milkiness when passed through lime water. But this colourless gas does not decolorise acidified KMnO_(4). (b) [X] dissolved in diliute HCl. On reaction with KI gives a white precipitate(P) and iodine gas. (c) [Y] on roasting at high temperature gives metal (M) and gas (G_(1)) which turns starch iodate solution blue. (d) [Y] on reaction with dilute HCl gives a white precipatate (MS) and another gas (G_(1)) to precipitate colloidal sulpher in presence of moisture. M,S[X],[Y] gives greenish blue flame. Which of the following statements is correct about [Y]?
Answer» [Y] is converted to metal (M) by self reduction. Carbon extract of [Y] gives YELLOW precipitate with suspension of `CdCO_(3)`. [Y] is COPPER glance or copper pyrite. All of the above Solution :`"Colourless gas" to CO_(2)X to Cu^(2+), CO_(3)^(2-),OH^(-)` G_(2) to H_(2)S, G_(1)to SO_(2),M to Cu, Sto CUO Y to Cu^(2+), S^(2-)