Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Leaching of gold with dilute aqueous solution of NaCN in presence of oxygen gives complex [A], which on reaction with zinc forms the elemental gold and another complex [B]. [A] and [B], respectively are
A
and 
B
and 
C
and 
D
and 
Text Solution
Verified by ExpertsThe correct answer is:
C
Au + NaCN 
Na[Au(CN) 2 ]
Zn + Na[Au(CN) 2 ] 
Na 2 [Zn(CN) 4 ] + Au
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