When \( \mathrm{AgCl} \) is treated with \( \mathrm{KCN} \) : (WB JEE 2010) (a) \( \mathrm{Ag} \...

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When \( \mathrm{AgCl} \) is treated with \( \mathrm{KCN} \) :
(WB JEE 2010)
(a) \( \mathrm{Ag} \) is precipitated
(b) a complex ion is formed
\( P \)
(c) double decompostion takes place
(d) no reaction takes place
W.
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