Crystal field theory

The correct statement about the magnetic properties of $\ce{[Fe(CN)6]^3-}$ and $\ce{[FeF6]^3-}$ is : ($Z=26$).

Among the following species the one which causes the highest CFSE, $\Delta_o$ as a ligand is :

Consider the following complex ions, P, Q and R.
$$\mathbf P=\ce{[FeF6]^{3-}},\quad\mathbf Q=\ce{[V(H2O)6]^{2+}}\quad\text{and}\quad\mathbf R=\ce{[Fe(H2O)6]^{2+}}.$$
The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is

Geometrical shapes of the complexes formed by the reaction of $\ce{Ni^{2+}}$ with $\ce{Cl-}$, $\ce{CN-}$ and $\ce{H2O}$, respectively, are

Among the following complexes (K-P),

$\ce{K3[Fe(CN)6]}$ (K), $\ce{[Co(NH3)6]Cl3}$ (L), $\ce{Na3[Co(oxalate)3]}$ (M), $\ce{[Ni(H2O)6]Cl2}$ (N), $\ce{K2[Pt(CN)4]}$ (O) and $\ce{[Zn(H2O)6](NO3)2}$ (P)

the diamagnetic complexes are

The complex showing a spin-only magnetic moment of 2.82 B.M. is

Match the complexes in Column I with their properties listed in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 × 4 matrix given in the ORS.