Consider the following metallurgical process: (P) Heating impure metal with CO and distilling the resulting volatile cabonyl (b.p. 43^(@)C) and finally decomposing at 150^(@)-200^(@)Cto get the pure metal. (Q) Heating the sulphide ore in air unitl a part is converted to oxide and then further heating in the absence of air to let the oxide react, with unchangedmetal sulphide. (R) Electrolysis of the molten electrolyte containing approximately equal amounts of the metal chloride and NaCl to obtian the metal The processes used for obtaining manesium nickel and copper are respectively:

Consider the following metallurgical process: (P) Heating impure meta

1.	Consider the following metallurgical process: (P) Heating impure metal with CO and distilling the resulting volatile cabonyl (b.p. 43^(@)C) and finally decomposing at 150^(@)-200^(@)Cto get the pure metal. (Q) Heating the sulphide ore in air unitl a part is converted to oxide and then further heating in the absence of air to let the oxide react, with unchangedmetal sulphide. (R) Electrolysis of the molten electrolyte containing approximately equal amounts of the metal chloride and NaCl to obtian the metal The processes used for obtaining manesium nickel and copper are respectively:
Answer» <P>P,Q and R only Q,R and P R,P and Q Q,P and R Answer :C