Chemistry · 2019
JEE Main · 10 January 2019, Shift 2 · Q42
The electrolytes usually used in the electroplating of gold and silver, respectively, are:
The electrolytes usually used in the electroplating of gold and silver, respectively, are:
Official answer
(1)
$\displaystyle \left[\mathrm{Au}(\mathrm{CN})_2\right]^{-} \text {and }\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}$
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.