Q. Total number of moles of $AgCl$ precipitated on addition of excess of $AgNO _3$ to one mole each of the following complexes $\left[ Co \left( NH _3\right)_4 Cl _2\right] Cl$, $\left[ Ni \left( H _2 O \right)_6\right] Cl _2,\left[ Pt \left( NH _3\right)_2 Cl _2\right]$ and $\left[ Pd \left( NH _3\right)_4\right] Cl _2$ is
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