Describe the principle behind each of the following processes: (i) Vapour phase refining of a metal. (ii) Electroly

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Q 2611167029.     Describe the principle behind each of the following processes:

(i) Vapour phase refining of a metal.
(ii) Electrolytic refining of a metal.
(iii)Recovery of silver after silver ore was leached with NaCN.
CBSE-12th 2011

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