Which of the following compounds give white ppt. with dil. $\mathrm{HCI}$?

$\mathrm{Pb}(\mathrm{OAc}{)}_2$, ${\mathrm{AgNO}}_3$ and ${\mathrm{Hg}}_2{\left({\mathrm{NO}}_3\right)}_2$ give white ppt. with dil.$\mathrm{HCI}$.

${\mathrm{AgNO}}_3+\mathrm{HCl}\to \mathrm{AgCl}+{\mathrm{HNO}}_3$

Where the white ppt represents $\mathrm{AgCl}$.

${\mathrm{Hg}}_2({\mathrm{NO}}_3{)}_2+2\mathrm{HCl}\to {\mathrm{Hg}}_2{\mathrm{Cl}}_2+2{\mathrm{HNO}}_3$

${\mathrm{Hg}}_2{\mathrm{Cl}}_2$ is a yellowish-white ppt in where.

Hence, options A, B and C are correct.