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Q.

Which of the purity range for copper obtained from electrolytic refining?

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a

90-95%

b

99.95-99.99%

c

98-99%

d

100%

answer is D.

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Detailed Solution

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The copper content in pyrometallurgical production is only 99.5% and the purity is low. Electrorefining is necessary to increase the purity of copper to above 99.9% and is an important process in the manufacturing process of high-purity cathodic copper.

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