Extraction of Silver and Gold

JEE Main Chemistry · Metallurgy · 3 questions, latest first

• In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?202229 June, Shift 1 · Q67
• Statement I: Leaching of gold with cyanide ion in absence of air / O_2 leads to cyano complex of Au(III). Statement II: Zinc is…202227 June, Shift 2 · Q63
• Leaching of gold with dilute aqueous solution of NaCN in presence of oxygen gives complex [A], which on reaction with zinc forms…202225 June, Shift 1 · Q64