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From gold auro cyanide $Na[Au(CN)_2]$ gold can be precipitated by adding powder of

$ (a)\;Hg\\(b)\;Ag\\(c)\;Zn \\ (d)\;None $

1 Answer

$Zn$ is correct.
Hence c is the correct answer.
answered Mar 17, 2014 by meena.p
 

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