During the extraction of gold the following reactions take place - {\Au}+ {\CN}^{-}+ {\H}_2 {\O} \stackrel{ {\O}{\to}_2}[ {\X}] {[ {\X}]+ {\Zn} \to[Y]+ {\Au}} X and Y are respectively -

Correct Answer is : [Au(CN)2]−and [Zn(CN)4]2−

[ {\Au}( {\CN})_2] ^{-}and [ {\Zn}( {\CN})_4] ^{2-}

[ {\Au}( {\CN})_4] ^{3-} and [ {\Zn}( {\CN})_4] ^{2-}

[ {\Au}( {\CN})_4] ^{2-} and [ {\Zn}( {\CN})_4] ^{2-}

[ {\Au}( {\CN})_2] ^{-}and [ {\Zn}( {\CN})_6] ^{4-}

KCET 2007 Chemistry Solved Paper

Question : 1 of 60

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During the extraction of gold the following reactions take place -
‌Au+CN−+H2O

→

[X]
‌[X]+Zn→[Y]+Au
X and Y are respectively -

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