Q10Multiple choice
Extraction of gold and silver involves leaching the metal with CN ion. The metal is recovered by ________________.
This question refers to a figure in the original PDF.
- (i)displacement of metal by some other metal from the complex ion.
- (ii)roasting of metal complex.
- (iii)calcination followed by roasting.
- (iv)thermal decomposition of metal complex. Note : Answer the questions 11-13 on the basis of Fig. 6.1. Fig. 6.1
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(i) displacement of metal by some other metal from the complex ion.