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Which of the following is/are correctly ...

Which of the following is/are correctly matcbed?

A

Cyanide process - extraction of Au

B

Froth floating process - `CuSO_(4)`

C

Electrolytic reduction - extraction of Cu

D

Zone refining - ultrapure Ge

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
Au extracted by eynide process.
Cu - extracted by self reduction. Not by electrolytic reduction Zone refining is used for the production of ultra pure semiconductors like Ge.
`CuSO_(4)` is used as activator in froth floatation process.
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