Multiple Choice

Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is (are):

AImpure Cu strip is used as cathode
BAcidified aqueous $$\displaystyle CuSO_{4}$$ is used as electrolyte
Correct Answer
CPure Cu deposits at cathode
Correct Answer
DImpurities settle as anode-mud
Correct Answer

Solution

During purification of copper by electrolytic refining of blister copper,

(A) Impure Cu strip (blister copper) is used as anode whereas pure Cu strip is used as cathode. Hence, the option (A) is incorrect.

(B) The electrolyte used is acidified aqueous copper sulphate solution. Hence, the option (B) is correct.

(C) Pure Cu transfers from anode to cathode and deposits at cathode. Hence, the option (C) is correct.

(D) Impurities like Fe, Zn, Ni, Co etc. dissolve in the solution as sulphates and others like Au and Ag settle as anode-mud. Hence, the option (D) is correct.

SIMILAR QUESTIONS

Metallurgy

Which one of the following ores is known as Malachite?

Metallurgy

A metal M which is one of the best conductor of heat and electricity used in making electric wires is found in the nature as sulphide ore $$M_2S$$? Which process will be suitable for extraction of this metal M from its ore, $$M_2S$$? Write a balance chemical reaction involved in the process of extraction.

Metallurgy

Which of the following metals is extracted using a silica lined convertor?

Metallurgy

Name one chief ore each of copper and aluminium. Name the method used for concentration of these two ores.

Metallurgy

Zinc can displace __________ from $$CuSO_4$$ solution, but cannot displace _______ from $$MgSO_4$$ solution.

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