Q 1 :

Which of the following complex is homoleptic?                              [2024]

• ${\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}$

   

• $\left[{\text{Ni(NH}}_3{\text{)}}_2{\text{Cl}}_2\right]$

   

• ${\left[{\text{Fe(NH}}_3{\text{)}}_4{\text{Cl}}_2\right]}^{+}$

   

• ${\left[{\text{Co(NH}}_3{\text{)}}_4{\text{Cl}}_2\right]}^{+}$

   

Q 2 :

The correct IUPAC name of $\left[{\text{PtBr}}_2{\text{(PMe}}_3{\text{)}}_2\right]$ is:                     [2024]

• dibromobis(trimethylphosphine)platinum(II)

   

• bis[bromo(trimethylphosphine)]platinum(II)

   

• dibromodi(trimethylphosphine)platinum(II)

   

• bis(trimethylphosphine)dibromoplatinum(II)

   

Q 3 :

Given below are two statements:

Statement I: $\mathrm{N}{\left({\mathrm{CH}}_3\right)}_3$ and $\mathrm{P}{\left({\mathrm{CH}}_3\right)}_3$ can act as ligands to form transition metal complexes.

Statement II: As N and P are from the same group, the nature of bonding of $\mathrm{N}{\left({\mathrm{CH}}_3\right)}_3$ and $\mathrm{P}{\left({\mathrm{CH}}_3\right)}_3$ is always same with transition metals.

In the light of the above statements, choose the most appropriate answer from the options given below:                      [2024]

• Statement I is correct but Statement II is incorrect

   

• Both Statement I and Statement II are correct

   

• Statement I is incorrect but Statement II is correct

   

• Both Statement I and Statement II are incorrect

   

Q 4 :

The correct IUPAC name of ${\mathrm{K}}_2{\mathrm{MnO}}_4$ is:                     [2024]

• Potassium tetraoxidomanganese (VI)

   

• Potassium tetraoxidomanganate (VI)

   

• Dipotassium tetraoxidomanganate (VII)

   

• Potassium tetraoxopermanganate (VI)

   

Q 5 :

Number of ambidentate ligands among the following is ___________.                       [2024]

${\text{NO}}_2^{-}, {\text{SCN}}^{-}, {\text{C}}_2{\text{O}}_4^{2-}, {\text{NH}}_3, {\text{CN}}^{-}, {\text{SO}}_4^{2-}, {\text{H}}_2\text{O}$

Q 6 :

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is:       [2023]

• ${\mathrm{Co}}^{2+}$

   

• ${\mathrm{Fe}}^{2+}$

   

• ${\mathrm{Ni}}^{2+}$

   

• ${\mathrm{Cu}}^{2+}$

   

Q 7 :

The primary and secondary valencies of cobalt respectively in $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2$ are:                        [2023]

• 3 and 5

   

• 2 and 6

   

• 2 and 8

   

• 3 and 6

   

Q 8 :

Cobalt chloride when dissolved in water forms pink coloured complex X which has octahedral geometry. This solution on treating with conc. HCl forms deep blue complex, Y which has a Z geometry. X, Y and Z, respectively, are                    [2023]

• $X={\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4{\mathrm{Cl}}_2\right]}^{+},Y={\left[{\mathrm{CoCl}}_4\right]}^{2-},Z=\text{Tetrahedral}$

   

• $X={\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+},Y={\left[{\mathrm{CoCl}}_6\right]}^{3-},Z=\text{Octahedral}$

   

• $X={\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+},Y={\left[{\mathrm{CoCl}}_4\right]}^{2-},Z=\text{Tetrahedral}$

   

• $X={\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+},Y={\left[{\mathrm{CoCl}}_6\right]}^{3-},Z=\text{Octahedral}$

   

Q 9 :

Which of the following are the example of double salt?

(A) ${\mathrm{FeSO}}_4.{\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4.6{\mathrm{H}}_2\mathrm{O}$

(B) ${\mathrm{CuSO}}_4.4{\mathrm{NH}}_3.{\mathrm{H}}_2\mathrm{O}$

(C) ${\mathrm{K}}_2{\mathrm{SO}}_4.{\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3.24{\mathrm{H}}_2\mathrm{O}$

(D) $\mathrm{Fe}{\left(\mathrm{CN}\right)}_2.4\mathrm{KCN}$

Choose the correct answer                              [2023]

• A and B only

   

• A, B and D only

   

• A and C only

   

• B and D only

   

Q 10 :

The IUPAC name of ${\mathrm{K}}_3\left[\mathrm{Co}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3\right]$ is:                 [2023]

• Potassium trioxalatocobalt (III)

   

• Potassium tris(oxalato)cobalt (III)

   

• Potassium trioxalatocobaltate (III)

   

• Potassium tris(oxalato)cobaltate (III)