Metals are refined by using different methods. Which of the following metals are refined by electrolytic refining?
Au
Cu
Na
K
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)

Academic Chemistry NCERT Class 10

Correct Answer: (d) (iii) and (iv)

Explanation: Sodium and potassium are at the top of reactivity series hence they can be refined by electrolytic refining.

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Updated on: 10-Oct-2022

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