Which of the following metal refined-electrolytically?

A l

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N a

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C u

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F e

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Solution

The correct options are
A $A l$
C $C u$
The impure copper from a smelter is cast into a block to form the positive anode and the cathode is made up of purified copper. These are dipped into an electrolyte of copper sulphate solution. purification of aluminium can be carried out by the Hoopes process. This is an electrolytic process.

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A u

C u

N a

K

Question 12
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

(i) $A u$
(ii) $C u$
(iii) $N a$
(iv) $K$

(a) (i) and (ii) (b) (i) and (iii)

Question 12
Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?

(i) $A u$
(ii) $C u$
(iii) $N a$
(iv) $K$

(a) (i) and (ii) (b) (i) and (iii)

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