The CBSE Class 12 Chemistry exam requires precision and a thorough understanding of Coordination Compounds. This article provides a set of CBSE Class 12 PYQs on Coordination Compounds to help you understand the topic and improve your skills with the help of detailed solutions, ensuring conceptual clarity, which will help you in the CBSE Class 12 2026 exam.
Whether you're revising the basics or testing your knowledge, these Coordination Compounds Class 12 notes will serve as a valuable practice resource.
The CBSE Class 12 2026 exam is likely to continue on the same pattern as CBSE Class 12 2025. One of the best ways to improve your preparation is to practise CBSE Class 12 previous year questions (PYQs), which include a fair mix of questions from all topics.
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CBSE Class 12 PYQs on Coordination Compounds
1.
Which of the following ligands forms a chelate complex?- C\(_2\)O\(_4^{2-}\)
- Cl\(^{-}\)
- NO\(_2^{-}\)
- NH\(_3\)
2.
The diamagnetic species is :- [Ni(CN)$_4$]$^{2-}$
- [NiCl$_4$]$^{2-}$
- [Fe(CN)$_6$]$^{3-}$
- [CoF$_6$]$^{3-}$
3.
Which of the following properties of transition metals enables them to behave as catalysts?- High melting point
- High ionisation enthalpy
- Alloy formation
- Variable oxidation states
4.
The diamagnetic species is :- [Ni(CN)$_4$]$^{2-}$
- [NiCl$_4$]$^{2-}$
- [Fe(CN)$_6$]$^{3-}$
- [CoF$_6$]$^{3-}$
5.
The correct IUPAC name of \([ \text{Pt}(\text{NH}_3)_2\text{Cl}_2 ]^{2+} \) is:
- Diamminedichloridoplatinum (II)
- Diamminedichloridoplatinum (IV)
- Diamminedichloridoplatinum (O)
Diamminedichloridoplatinate (IV)
6.
The complex ions \([Co(NH_3)_5(NO_2)]^{2+\) and \([Co(NH_3)_5(ONO)]^{2+}\) are called}- Ionization isomers
- Linkage isomers
- Co-ordination isomers
- Geometrical isomers
7.
On adding AgNO\(_3\) solution to 1 mole of CoCl\(_3\)·4NH\(_3\), one mole of AgCl is precipitated. The secondary valency of Co is:- 6
- 4
- 3
- 2
8.
The number of moles of AgCl precipitated when excess AgNO$_3$ solution is mixed with one mole of [Co(NH$_3$)$_6$]Cl$_3$ is:- 0
- 1
- 2
- 3
9.
Assertion (A): [Cr(H$_2$O)$_6$]Cl$_2$ and [Fe(H$_2$O)$_6$]Cl$_2$ are examples of homoleptic complexes.
Reason (R): All the ligands attached to the metal are the same.- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false, but Reason (R) is true.
10.
Out of Ti3+, Cr3+, Fe2+ and Ni2+ ions, the one which is the most stable ion in aqueous solution is:
- Ti3+
- Cr3+
- Fe2+
- Ni2+
11.
The correct IUPAC name of [Pt(NH$_3$)$_2$Cl$_2$]$^{2+} $ is:- Diamminedichloridoplatinate (IV)
- Diamminedichloridoplatinum (IV)
- Diamminedichloridoplatinum (O)
- Diamminedichloridoplatinum (II)
12.
Ligand EDTA\(^{4-}\) is an example of a:- Monodentate ligand
- Didentate ligand
- Tridentate ligand
- Polydentate ligand
13.
The diamagnetic species is :
At. No. Co = 27, Fe =26, Ni= 28]- \( [Ni(CN)_4]^{2-} \)
- \( [NiCl_4]^{2-} \)
- \( [Fe(CN)_6]^{3-} \)
- \( [CoF_6]^{3-} \)
14.
The complex ions [Co(NH$_3$)$_5$(NO$_2$)]$^{2+}$ and [Co(NH$_3$)$_5$(ONO)]$^{2+}$ are called- Ionization isomers
- Linkage isomers
- Co-ordination isomers
- Geometrical isomers
15.
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr$^{3+}$ ion (Atomic no. : Cr = 24) is:- 2.87 B.M.
- 3.87 B.M.
- 3.47 B.M.
- 3.57 B.M.
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