Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Coordination Compounds. In this article, we will provide 50+ MCQ questions on the Coordination Compounds, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Coordination Compounds JEE Mains MCQ Questions with Answers.
Coordination Compounds JEE Mains MCQ
Which of the following complexes exhibits optical isomerism? a) [Co(NH3)6]3+ b) [Cr(en)3]3+ c) [Cu(NH3)4(H2O)2]2+ d) [Fe(CN)6]4-
Answer: b) [Cr(en)3]3+
Explanation: The complex [Cr(en)3]3+ contains three bidentate ethylenediamine ligands (en), which can exist in cis and trans isomeric forms, leading to optical isomerism.
The coordination number of cobalt in the complex [Co(NH3)6]Cl3 is: a) 4 b) 5 c) 6 d) 3
Answer: c) 6
Explanation: The complex [Co(NH3)6]Cl3 contains six ammonia ligands, indicating a coordination number of 6 for cobalt.
The complex [Ni(CN)4]2- is: a) Square planar b) Tetrahedral c) Octahedral d) Linear
Answer: b) Tetrahedral
Explanation: The complex [Ni(CN)4]2- has a coordination number of 4 and a tetrahedral geometry.
Which of the following ligands is a strong field ligand? a) NH3 b) Cl- c) H2O d) CO
Answer: d) CO
Explanation: Carbon monoxide (CO) is a strong field ligand that forms strong bonds with the central metal ion, leading to a high crystal field splitting.
The complex [PtCl6]2- exhibits: a) Paramagnetism b) Diamagnetism c) Ferromagnetism d) Antiferromagnetism
Answer: b) Diamagnetism
Explanation: The complex [PtCl6]2- is a high-spin d6 complex with no unpaired electrons, resulting in diamagnetic behavior.
Which of the following ligands can exhibit cis-trans isomerism? a) NH3 b) Cl- c) H2O d) C2H4
Answer: d) C2H4 (ethylene)
Explanation: Ethylene (C2H4) can act as a bidentate ligand, forming coordination compounds that exhibit cis-trans isomerism.
The oxidation state of the central metal ion in the complex [Fe(CN)6]4- is: a) +2 b) +3 c) +4 d) +6
Answer: b) +3
Explanation: The complex [Fe(CN)6]4- has a total charge of -4, and since each cyanide (CN-) ligand has a charge of -1, the oxidation state of iron (Fe) must be +3 to balance the charge.
Which of the following complexes exhibits geometric isomerism? a) [Co(NH3)5Cl]2+ b) [Pt(NH3)2Cl2] c) [Cu(NH3)4(H2O)2]2+ d) [Ni(CN)4]2-
Answer: b) [Pt(NH3)2Cl2]
Explanation: The complex [Pt(NH3)2Cl2] contains two different types of ligands (NH3 and Cl), allowing for the possibility of geometric isomerism.
The complex [Co(en)2Cl2]+ contains how many isomers? a) 2 b) 3 c) 4 d) 1
Answer: b) 3
Explanation: The complex [Co(en)2Cl2]+ can exist in three isomeric forms: cis-cis, trans-trans, and cis-trans.
Which of the following ligands is classified as a chelating ligand? a) NH3 b) Cl- c) H2O d) EDTA
Answer: d) EDTA (ethylenediaminetetraacetate)
Explanation: EDTA is a chelating ligand that can form multiple coordination bonds with a central metal ion through its multiple donor atoms.
The complex [Ni(H2O)6]Cl2 exhibits: a) Paramagnetism b) Diamagnetism c) Ferromagnetism d) Antiferromagnetism
Answer: a) Paramagnetism
Explanation: The complex [Ni(H2O)6]Cl2 has unpaired electrons in the d-orbitals of nickel, leading to paramagnetic behavior.
The IUPAC name for the complex [Co(NH3)5Cl]2+ is: a) Pentaamminechlorocobalt(II) b) Pentaamminedichlorocobalt(II) c) Pentaamminetrichlorocobalt(II) d) Pentaamminetetrachlorocobalt(II)
Answer: a) Pentaamminechlorocobalt(II)
Explanation: The complex [Co(NH3)5Cl]2+ is named as pentaamminechlorocobalt(II) following the IUPAC nomenclature.
The complex [Cu(NH3)4(H2O)2]2+ has a coordination number of: a) 4 b) 5 c) 6 d) 8
Answer: c) 6
Explanation: The complex [Cu(NH3)4(H2O)2]2+ contains four ammonia ligands and two water ligands, resulting in a coordination number of 6.
The complex [Fe(CN)6]3- is: a) Square planar b) Tetrahedral c) Octahedral d) Linear
Answer: c) Octahedral
Explanation: The complex [Fe(CN)6]3- has a coordination number of 6 and an octahedral geometry.
Which of the following ligands is classified as a bridging ligand? a) NH3 b) Cl- c) H2O d) CN-
Answer: d) CN- (cyanide)
Explanation: Cyanide (CN-) can act as a bridging ligand, forming coordination compounds where it bridges two or more metal ions.
The complex [Ni(CO)4] is an example of: a) A low-spin complex b) A high-spin complex c) A paramagnetic complex d) A diamagnetic complex
Answer: a) A low-spin complex
Explanation: The complex [Ni(CO)4] has a low-spin configuration, with all the electrons paired in the d-orbitals of nickel.
Which of the following ligands is a weak field ligand? a) NH3 b) Cl- c) H2O d) CN-
Answer: a) NH3
Explanation: Ammonia (NH3) is a weak field ligand that forms weak bonds with the central metal ion, resulting in a low crystal field splitting.
The complex [Pt(NH3)4][PtCl6] is an example of: a) A coordination isomer b) A linkage isomer c) A geometrical isomer d) A structural isomer
Answer: a) A coordination isomer
Explanation: The complex [Pt(NH3)4][PtCl6] exhibits coordination isomerism, where the ligands and the metal ions are exchanged between the cation and the anion.
The complex [Co(NH3)6]3+ undergoes hydrolysis in an aqueous solution to form: a) [Co(H2O)6]3+ b) [Co(NH3)5(H2O)]2+ c) [Co(NH3)4(H2O)2]+ d) [Co(NH3)3(H2O)3]2+
Answer: c) [Co(NH3)4(H2O)2]+
Explanation: The complex [Co(NH3)6]3+ undergoes hydrolysis, replacing some of the ammonia ligands with water ligands to form [Co(NH3)4(H2O)2]+.
The complex [Cu(NH3)2]+ exhibits: a) Paramagnetism b) Diamagnetism c) Ferromagnetism d) Antiferromagnetism .
Answer: b) Diamagnetism
Explanation: The complex [Cu(NH3)2]+ has all the electrons paired, resulting in diamagnetic behavior
The complex [Cr(H2O)6]Cl3 exhibits: a) Paramagnetism b) Diamagnetism c) Ferromagnetism d) Antiferromagnetism
Answer: a) Paramagnetism
Explanation: The complex [Cr(H2O)6]Cl3 has unpaired electrons in the d-orbitals of chromium, leading to paramagnetic behavior.
The IUPAC name for the complex [Pt(en)2Cl2]Cl2 is: a) Dichlorobis(ethylenediamine)platinum(II) chloride b) Dichlorobis(ethylenediamine)platinum(IV) chloride c) Tetrachlorobis(ethylenediamine)platinum(II) chloride d) Tetrachlorobis(ethylenediamine)platinum(IV) chloride
Answer: a) Dichlorobis(ethylenediamine)platinum(II) chloride
Explanation: The complex [Pt(en)2Cl2]Cl2 is named as dichlorobis(ethylenediamine)platinum(II) chloride following the IUPAC nomenclature.
Which of the following ligands is classified as a monodentate ligand? a) NH3 b) Cl- c) H2O d) EDTA
Answer: a) NH3
Explanation: Ammonia (NH3) is a monodentate ligand as it forms a single coordinate bond with the central metal ion.
The coordination number of the complex [Fe(H2O)6]3+ is: a) 4 b) 5 c) 6 d) 8
Answer: c) 6
Explanation: The complex [Fe(H2O)6]3+ contains six water ligands, indicating a coordination number of 6 for iron.
Which of the following ligands is classified as a polydentate ligand? a) NH3 b) Cl- c) H2O d) EDTA
Answer: d) EDTA (ethylenediaminetetraacetate)
Explanation: EDTA is a polydentate ligand as it has multiple donor atoms (nitrogen and oxygen) capable of forming multiple coordinate bonds with the central metal ion.
The complex [Co(en)3]3+ contains how many isomers? a) 2 b) 3 c) 4 d) 1
Answer: c) 4
Explanation: The complex [Co(en)3]3+ can exhibit four isomeric forms: cis-cis-cis, cis-trans-cis, trans-cis-cis, and trans-trans-trans.
Which of the following ligands is classified as a neutral ligand? a) NH3 b) Cl- c) H2O d) CN-
Answer: a) NH3
Explanation: Ammonia (NH3) is a neutral ligand as it does not carry a charge.
The complex [Pt(NH3)3Cl]Br2 exhibits: a) Linkage isomerism b) Geometric isomerism c) Ionization isomerism d) Coordination isomerism
Answer: d) Coordination isomerism
Explanation: The complex [Pt(NH3)3Cl]Br2 exhibits coordination isomerism, where the ligands and the central metal ion are exchanged between the cation and the anion.
The complex [Co(NH3)4Cl2]+ has a coordination number of: a) 4 b) 5 c) 6 d) 8
Answer: c) 6
Explanation: The complex [Co(NH3)4Cl2]+ contains four ammonia ligands and two chloride ligands, resulting in a coordination number of 6.
The complex [Cu(en)2(H2O)2]Cl2 exhibits: a) Paramagnetism b) Diamagnetism c) Ferromagnetism d) Antiferromagnetism
Answer: c) 6
Explanation: The complex [Co(NH3)4Cl2]+ contains four ammonia ligands and two chloride ligands, resulting in a coordination number of 6.
We hope there JEE MCQ of Class 12 Coordination Compounds will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
