The colour of $(NH_4)_2SO_4 \cdot Fe_2(SO_4)_3 \cdot 24H_2O$ is

Addition of excess of $AgNO_3$ to an aqueous solution of $1$ mole of $PdCl_2 \cdot 4 NH_3$ gives $2$ moles of $AgCl$. The conductivity of this solution corresponds to

Which of the following coordination complexes contains both anionic and neutral ligands?

Which among the following complexes is a neutral complex?

What is the value of the primary valence of $Co$ in $CoCl_{3}$?

On treatment of $10 \ mL$ of $1 \ M$ solution of the complex $CrCl_3 \cdot 6H_2O$ with excess of $AgNO_3$,$4.305 \ g$ of $AgCl$ was obtained. The complex is