Which of the following compounds is not colored yellow?

Select the correct statement$(s)$ regarding the $[Ni(DMG)_2]$ complex compound.

$[Ni(CO)_4]$ is diamagnetic. Which of the following statements is correct for this complex?

Given below are two statements:
Statement $I$: Crystal Field Stabilization Energy $(CFSE)$ of $[Cr(H_2O)_6]^{2+}$ is greater than that of $[Mn(H_2O)_6]^{2+}$.
Statement $II$: Potassium ferricyanide has a greater spin-only magnetic moment than sodium ferrocyanide.
In the light of the above statements,choose the correct answer from the options given below:

The equation which is balanced and represents the correct product$(s)$ is:

$A$ mixture $X$ containing $0.02 \, mol$ of $[Co(NH_3)_5SO_4]Br$ and $0.02 \, mol$ of $[Co(NH_3)_5Br]SO_4$ is dissolved in water to make a $2 \, L$ solution.
$1 \, L \, of \, X + \text{Excess of } AgNO_3 \rightarrow Y \, mol \, of \, ppt.$
$1 \, L \, of \, X + \text{Excess of } BaCl_2 \rightarrow Z \, mol \, of \, ppt.$
Then $Y$ and $Z$ are respectively ...............