Question

is used for purification of metals.
(a) Copper (b) Electrolysis
(c) Galvanisation (d) Silver​

Answer 1

Answer:

Electrolysis

Electrolysis, or electrolytic refining, is a technique used for extraction, as well as purification, of metals obtained by any refining method. In the electro-refining process, a block of impure metal becomes the anode, and a thin sheet of metal becomes the cathode.

Step-by-step explanation:

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Answer 2

Answer:

(b) Electrolysis is used for purification of metals.

Step-by-step explanation:

The process used in purifying metals by electrolysis is called electrorefining. In the process for refining a metal in an electrolytic cell, in which the impure metal is used as the anode and the refined metal is deposited on the cathode.

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