During the extraction of gold the following reactions take place Au+CN^{-}+H_2O\stackrel{O_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)_6]^{4-}

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

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

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

NEET Exam Model Paper 1

Question : 164 of 180

Marks: +1, -0

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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