Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
A. Cheap electricity is available
B. The precious metal content of copper is high
C. There is a demand for ultrapure (99.99%) electrolytic copper
D. All of the above
Answer: Option D
This Question Belongs to Chemical Engineering >> Chemical Engineering Basics
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