Chemistry

Problem

<b>Column-I</b>	<b>Column-II</b>
(A) $\text{ZnCl}_2 + \text{H}_2\text{S}$ <br>(B) $\text{CuSO}_4 + \text{Excess KI}$ <br>(C) $\text{Pb}_3\text{O}_4 + \text{dil. HNO}_3$ <br>(D) $\text{FeCl}_3 + \text{H}_2\text{S}$	(P) Pale green colouration<br>(Q) Brown solution/ppt.<br>(R) White turbidity<br>(S) No change is observed