M.Sc Chemistry CPGET Mock Test 2025

The IUPAC name of [Co(NH₃)₄Cl₂]Cl is:

• Tetraamminedichlorocobalt(III) chloride

• Dichlorotetraamminecobalt(III) chloride

• Tetraamminecobalt(III) dichloride

• Cobalt(III) tetraamminedichloride

The coordination number of Fe in [Fe(CN)₆]3- is: [ ]

• 4

• 6

• 3

• 2

Which ligand is polydentate?[ ]

• NH₃

• H₂O

• EDTA

• CO

The oxidation state of Cr in [Cr(H₂O)₆]^{3+} is:[ ]

• +1

• +2

• +3

• +6

The EAN (Effective Atomic Number) of Ni in [Ni(CO)₄] is: [ ]

• 34

• 36

• 28

• 30

Which metal carbonyl obeys the 18-electron rule? [ ]

• [Fe(CO)₅]

• [Co(CO)₄]

• [Mn(CO)₆]+

• All of the above

The bridging ligand in [(CO)₃Fe(CO)₃Fe(CO)₃]is:[ ]

• CO

• NO

• O₂

• N₂

The geometry of [Co₂(CO)₈]is:[ ]

• Tetrahedral

• Square planar

• Octahedral

• Dodecahedral

The metal ion present in hemoglobin is:

• Mg²⁺

• Fe²⁺

• Cu²⁺

• Zn²⁺

Chlorophyll contains:

• Fe²⁺

• Mg²⁺

• Ca²⁺

• Mn²⁺