MCQ
Silver chloride dissolves in
- AWater
- BConc. $HCl$
- ✓$NH_4OH$
- D$CCl_4$
It dissolves in $NH_4OH$ solution due to the formation of complex salt.
$AgCl + 2N{H_4}OH \to \mathop {[Ag{{(N{H_3})}_2}]Cl + 2{H_2}O}\limits_{{\text{Diamminesilver (I) chloride}}} $
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The correct statement about $P, Q, R$, and $S$ is

Statement $(I)$: A solution of $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ is green in colour.
Statement $(II)$: A solution of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is colourless.
In the light of the above statements, choose the most appropriate answer from the options given below:
