JEE Chemistry

Ligands & Coordination Number: JEE Questions & Solutions

29 previous-year JEE Chemistry questions on Ligands & Coordination Number, each with a worked step-by-step solution.

Intermediate

Previous-year questions

  1. 01Consider a mixture X which is made by dissolving 0.4 mol of [Co(NH₃)₅SO₄]Br and 0.4 mol of [Co(NH₃)₅Br]SO₄ in water to make 4 L of…MCQMediumJEE 2026
  2. 02A chromium complex with formula CrCl₃· 6H₂O has a spin only magnetic moment value of 3.87 BM and its solution conductivity corresponds to…NVAMediumJEE 2026
  3. 03The complex of Ni²⁺ ion and dimethyl glyoxime contains number of Hydrogen (H) atoms.NVAEasyJEE 2025
  4. 04Identify the coordination complexes in which the central metal ion has a d⁴ configuration. (A) [FeO₄]²⁻ (B) [Mn(CN)₆]³⁻ (C) [Fe(CN)₆]³⁻ (D)…MCQMediumJEE 2025
  5. 05One mole of the octahedral complex compound Co(NH₃)₅Cl₃ gives 3 moles of ions on dissolution in water. One mole of the same complex reacts…MCQEasyJEE 2025
  6. 06When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will…MCQEasyJEE 2025
  7. 07Identify the homoleptic complexes with odd number of d-electrons in the central metal: (A) [FeO₄]²⁻ (B) [Fe(CN)₆]³⁻ (C) [Fe(CN)₅NO]²⁻ (D)…MCQMediumJEE 2025
  8. 08Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a:MCQEasyJEE 2024
  9. 09The correct IUPAC name of K₂MnO₄ is:MCQEasyJEE 2024
  10. 10Aluminium chloride in acidified aqueous solution forms an ion having geometry:MCQEasyJEE 2024
  11. 11Choose the correct statements from the following: (A) Ethane-1,2-diamine is a chelating ligand. (B) Metallic aluminium is produced by…MCQMediumJEE 2024
  12. 12The coordination geometry around the manganese in decacarbonylmanganese(0) is:MCQEasyJEE 2024
  13. 13The coordination environment of Ca²⁺ ion in its complex with EDTA⁴⁻ is:MCQEasyJEE 2024
  14. 14A chloride salt solution acidified with dil. HNO₃ gives a curdy white precipitate, [A], on addition of AgNO₃. [A] on treatment with NH₄OH…MCQEasyJEE 2023
  15. 15Total number of moles of AgCl precipitated on addition of excess of AgNO₃ to one mole each of the following complexes: [Co(NH₃)₄Cl₂]Cl,…NVAEasyJEE 2023
  16. 16The sum of bridging carbonyls in W(CO)₆ and Mn₂(CO)₁₀ is.NVAEasyJEE 2023
  17. 17The denticity of the ligand present in Fehling's reagent isNVAEasyJEE 2023
  18. 18To inhibit the growth of tumours, identify the compounds used from the following: (A) EDTA (B) Coordination compounds of Pt (C)…MCQEasyJEE 2023
  19. 19Formulae for Nessler’s reagent is:MCQEasyJEE 2023
  20. 201 L, 0.02 M solution of [Co(NH₃)₅SO₄]Br is mixed with 1 L, 0.02 M solution of [Co(NH₃)₅Br]SO₄. The resulting solution is divided into two…MCQMediumJEE 2023
  21. 21Cobalt chloride when dissolved in water forms pink colored complex X which has octahedral geometry. This solution on treating with cone HCl…MCQEasyJEE 2023
  22. 22Which of the following are examples of double salts? (A) FeSO₄.(NH₄)₂SO₄.6H₂O (B) CuSO₄.4NH₃.H₂O (C) K₂SO₄.Al₂(SO₄)₃.24H₂O (D) Fe(CN)₂.4KCN…MCQEasyJEE 2023
  23. 23The IUPAC name of K₃[Co(C₂O₄)₃] is:MCQEasyJEE 2023
  24. 24Given below are two statements: one is labeled as “Assertion A” and the other is labeled as “Reason R”. Assertion A: In the complex Ni(CO)₄…MCQMediumJEE 2023
  25. 25The IUPAC name of K₃[Co(C₂O₄)₃] isMCQEasyJEE 2023
  26. 26Given below are two statements: one is labelled as “Assertion A” and the other is labelled as “Reason R” Assertion A: In the complex…MCQEasyJEE 2023
  27. 27The set which does not have ambidentate ligand(s) is:MCQEasyJEE 2023
  28. 28The complex that dissolves in water is:MCQEasyJEE 2023
  29. 29The volume (in mL) of 0.1 M AgNO₃ required for complete precipitation of chloride ions present in 20 mL of 0.01 M solution of…NVAEasyJEE 2023

Frequently asked questions

Our bank has 29 previous-year JEE Chemistry questions tagged to Ligands & Coordination Number, drawn from JEE papers between 2023 and 2026, including 2 from 2026 alone. Each comes with a full step-by-step solution.

Ligands & Coordination Number is rated Intermediate overall for JEE Chemistry. The PYQs on this page break down as 22 easy, 7 medium.

Of the 29 previous-year questions on Ligands & Coordination Number, 23 are multiple-choice (MCQ) and 6 are numerical-value (NVA) questions.

Based on recent paper analysis, Ligands & Coordination Number is worth about 2 marks in JEE Main. It sits in Coordination Compounds, a Class 12 Chemistry chapter.

More Coordination Compounds topics

Crystal Field Theory56Isomerism in Coordination Compounds13Valence Bond Theory12Werner's Theory1

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