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Mac-Arthur Forest cyanide process is use...

Mac-Arthur Forest cyanide process is used in the exteraction of
(i) Cu (ii) Ag (iii) Au (iv)Pt

A

(ii) and (iii)

B

(i),(ii),(iii)

C

(i),(ii) (iii),(iv)

D

(i) and (iv)

Text Solution

Verified by Experts

The correct Answer is:
a
genral metals below hydrogen in the electrochemical series occure in mature in the native state , Au, the respective metal is leached with a dilute with a dilute solution of `NaCN` or `KCN` in the process of air`(for O_(2))` "from which the metal is obtaiinsed later by replacament"
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