Metallurigical process of zinc involves roasting of zinc sulphide followed by reduction. Metallic zinc distills over as its volatile and impurities like Cu, Pd and Fe gets condensed. The crude metal obtained is called spelter, which may be purified by:

Which of the following process is involved in the extraction of corresponding metal when Zinc Blende is used as ore?

Consider the following metallurgical processes in 1. Heating impure metal with CO and distilling the resulting volatile carbonyl boiling point 43^@C and finally decomposing at 150^@ to 200^@C to get the pure metal. II. Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged sulphide. III. Electrolysing the molten electrolyte containing approximately equal amounts of the metal chloride and CaCl_2 to obtain the metal. The processes used for obtaining sodium, nickel and copper are respectively

Consider the following metallurgical processes : (I) Heating impure metal with CO and distilling the resulting volatile carbonyl (b.p. 43^(@)C) and finally decomposition at 150^(@)-200^(@)C to get the pure metal. (II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide. (III) Electrolysis of the molten electrolyte containing approximately equal amounts of the metal chloride and NaCl to obtain the metal. The processes used for obtaining magnesium , nickel and copper are respectively.

Consider the following metallurgical processes : (I) Heating impure metal with CO and distilling the resulting volatile carbonyl (b.p. 43^(@)C) and finally decomposition at 150^(@)-200^(@)C to get the pure metal. (II) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged metal sulphide. (III) Electrolysis of the molten electrolyte containing approximately equal amounts of the metal chloride and NaCl to obtain the metal. The processes used for obtaining magnesium , nickel and copper are respectively.

Roasting is carried out in extraction of metal in how many ores/minerals? Chalcopyrite, magnetite, Cassiterite containing impurity of pyrites of Fe and Cu, Galena, Zinc blende, Siderite,

Consider the following metallurgical processes : (1) Heating impure metal with CO and distilling the resulting volatile carbonyl (BP 43^@ C) and finally decomposing at 150^@C to 230^@ C to get pure metal. (2) Heating the sulphide ore in air until a part is converted to oxide and then further heating in the absence of air to let the oxide react with unchanged sulphide. (3) Electrolysing the molten electrolyte containing CaCl_(2) to obtain the metal The processes used for obtaining sodium, nickel, and copper are, respectively