$\quad\quad\quad\quad\quad\quad\quad\quad$blue colour
$(B)$ ${AgCl}+{nH}_{2} {O} \rightarrow$ Insoluble
$(C)$ ${ZnCl}_{2}+{nH}_{2} {O} \rightarrow {Zn}_{\left({aq}_{.}\right)}^{+2}$
$\quad\quad\quad\quad\quad\quad\quad\quad$Colourless
$(D)$ ${Cu}_{2} {Cl}_{2}+{nH}_{2} {O} \rightarrow$ Insoluble