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The compound having tetrahedral geometry is
1. ${\left[Ni{\left(CN\right)}_4\right]}^{2-}$
2. ${\left[Pd{\left(CN\right)}_4\right]}^{2-}$
3. ${\left[PdC{l}_4\right]}^{2-}$
4. ${\left[NiC{l}_4\right]}^{2-}$

$CuS{O}_4$ decolourises on addition of excess KCN, the product is
1. ${\left[Cu{\left(CN\right)}_4\right]}^{2-}$
2. ${\left[Cu{\left(CN\right)}_4\right]}^{3-}$
3. $Cu{\left(CN\right)}_2$
4. CuCN

Among the following metal carbonyls, the C-O bond order is lowest in
1. ${\left[Mn{\left(CO\right)}_6\right]}^{+}$
2. $\left[Fe{\left(CO\right)}_5\right]$
3. $\left[Cr{\left(CO\right)}_6\right]$
4. ${\left[V{\left(CO\right)}_6\right]}^{-}$

The volume (in mL) of 0.1 M AgNO3 required for complete precipitation of chloride ions present in 30 mL of 0.01 M solution of [Cr(H₂O)₅Cl]Cl₂, as silver chloride is close to
1. 4
2. 6
3. 20
4. 60

For octahedral complex, the value of the 'spin only' magnetic moment for one of the following configuration is 2.84 BM. The correct one is:
1. d⁴ (in strong ligand field)
2. d⁴ (in weak ligand field)
3. d³ (in weak as well as in strong field)
4. d⁵ (in strong ligand field)

Which of the following facts about the complex [Cr(NH₃)₆]Cl₃ is wrong?
1. The complex is an ourter orbital complex
2. The complex gives white precipitate with silver nitrate solution
3. The complex involves d²sp³ hybridization and is octahedral in shape
4. The complex is paramagnetic

${\left[{\mathrm{Fe}}^{\mathrm{II}}\mathrm{Cl}{\left(\mathrm{CN}\right)}_4\left({\mathrm{O}}_2\right)\right]}^{4-}$ is named as:
1. chlorotetracyanodioxoferrate (II) ion
2. chlorotetracyanoperoxoferrate (II) ion
3. chlorotetracyanosuperoxoferrate (II) ion
4. none is correct

The CFSE for ${\left[{\mathrm{CoCl}}_6\right]}^{4-}$ is 18000 ${\mathrm{cm}}^{-1}$. The $∆$ for ${\left[{\mathrm{CoCl}}_4\right]}^{2-}$ wil be :
1. 18000 ${\mathrm{cm}}^{-1}$
2. 16000 ${\mathrm{cm}}^{-1}$
3. 8000 ${\mathrm{cm}}^{-1}$
4. 2000 ${\mathrm{cm}}^{-1}$

The correct order of energies of d-orbitals of metal ions in a square planar complex is:
1. ${\mathrm{d}}_{\mathrm{xy}}={\mathrm{d}}_{\mathrm{yz}}={\mathrm{d}}_{\mathrm{zx}}>{\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}={\mathrm{d}}_{{\mathrm{z}}^2}$
2. ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}={\mathrm{d}}_{{\mathrm{z}}^2}>{\mathrm{d}}_{\mathrm{xy}}={\mathrm{d}}_{\mathrm{yz}}={\mathrm{d}}_{\mathrm{zx}}$
3. ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}>{\mathrm{d}}_{{\mathrm{z}}^2}>{\mathrm{d}}_{\mathrm{xy}}>{\mathrm{d}}_{\mathrm{yz}}={\mathrm{d}}_{\mathrm{zx}}$
4. ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}>{\mathrm{d}}_{\mathrm{xy}}>{\mathrm{d}}_{{\mathrm{z}}^2}>{\mathrm{d}}_{\mathrm{zx}}={\mathrm{d}}_{\mathrm{yz}}$

For a tetrahedral complex ${\left[{\mathrm{MCI}}_4\right]}^{2-}$, the spin-only magnetic moment is 3.83 B.M. The element M is 
1.  Co
2.  Cu
3.  Mn
4.  Fe

The number of geometrical isomers of [CrCl₂en(NH₃)₂] are:
[en-ethylenediamine]

The total number of geometrical isomers possible for an octahedral complex of $\left[{\mathrm{MA}}_2{\mathrm{B}}_2{\mathrm{C}}_2\right]$ are:
(M = transition metal; A, B and C are monodentate ligands)

The hybridised state of Cu in [Cu(NH₃ )₄ ]²⁺ is
1. sp
2. sp²
3. sp³
4. dsp²

EAN of Fe in K₃[Fe(CN)₆] is
1. 34
2. 35
3. 36
4. 37

Jahn-Teller effect is not observed in high spin complexes of
1.  d⁷
2.  d⁸
3.  d⁴
4.  d⁹