Match the following columns

CHEMISTRY · Subjective · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

Match the following columns.

Column I	Column II
(a) $\mathrm{ZnCl_2+H_2S}$	(p) Pale green colouration
(b) $\mathrm{CuSO_4+excess\ KI}$	(q) Brown solution/precipitate
(c) $\mathrm{Pb_3O_4+dil.\ HNO_3}$	(r) White turbidity
(d) $\mathrm{FeCl_3+H_2S}$	(s) No change is observed