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Consider the following metallurgical pro...

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.

A

`(I),(II)` and `(III)`

B

`(II),(III)` and `(I)`

C

`(III),(I)` and `(II)`

D

`(II) ,(I)` and `(III)`

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