What is the colour of BaCrO₄

Q. Find the number of yellow coloured water insoluble compound.
$Pb{I}_2,PbCr{O}_4,KI,NaI,A{g}_{2}Cr{O}_4,BaCr{O}_4,$

Q. The number of coefficients of $BaCr{O}_4$, $KI$, $CrC{l}_3$ and $KCl$ in the balanced equation $BaCr{O}_4+KI+HCl\to BaC{l}_2+I_2+KCl+CrC{l}_3+H_{2}O$, are respectively :

Q. The solubility product of $BaS{O}_4$ and $BaCr{O}_4$ at $25$ are $1\times {10}^{-10}$ and $1\times {10}^{-10}$ respectively. Calculate the solubilities of $BaS{O}_4$ and $Ba{CrO}_4$.

Q. The Ksp of $BaCr{O}_4$ is $2.4\times {10}^{-10}{M}^2$. The maximum concentration of $Ba(N{O}_3{)}_2$ possible without precipitation in a $6\times {10}^{-4}M{K}_{2}Cr{O}_4$ solution is ?

Q. Find the number of compounds which have yellow color ppt. from the given compounds?
$A{g}_{2}Cr{O}_4$, $PbCr{O}_4$, $H{g}_{2}Cr{O}_4$, $BaCr{O}_4$