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NEET Chemistry: Coordination Compounds. Chapter-wise Practice Questions and Test

Coordination Compounds is a Class 12 Chemistry chapter that carries about 4.5% of the Chemistry questions in NEET. Practise it with 48 questions covering 2 topics, each with an explanation.

Practise Coordination Compounds

Sets of 15 questions that adapt to your level, with an explanation for every answer.

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Topics covered in Coordination Compounds

How often Coordination Compounds has come up in NEET

Across the 13 previous year papers, Coordination Compounds had 32 questions, about 2.5 a year. The most in one paper was 4, in NEET 2017.

PaperQuestions from this chapter
NEET 20263
NEET 20254
NEET 20243
NEET 20231
NEET 20222
NEET 20212
NEET 20202
NEET 20191
NEET 20183
NEET 20174
NEET 20162
Re-AIPMT 20153
AIPMT 20142

Sample questions on Coordination Compounds with answers

8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.

Question 1: Coordination Number and Oxidation State

The complex [Zn(NH₃)₄]²⁺ is colourless because:

  1. A Zn²⁺ has a d¹⁰ configuration, so no d–d transition is possible
  2. B the complex is ionic
  3. C ammonia absorbs all visible light
  4. D Zn²⁺ has no electrons

Answer: A. Zn²⁺ has a d¹⁰ configuration, so no d–d transition is possible

Why: A complete d subshell has no vacancy for an excited electron.

Question 2: Werner's Theory and Nomenclature

The coordination number of the central metal atom in a complex is the number of:

  1. A electrons in its outermost shell
  2. B ligand donor atoms directly bonded to the central atom
  3. C unpaired electrons it has
  4. D oxidation states it can show

Answer: B. ligand donor atoms directly bonded to the central atom

Why: Coordination number equals the number of ligand donor atoms directly bonded to the central metal ion, as defined in Werner's theory.

Question 3: Coordination Number and Oxidation State

The correct order of the strengths of ligands in the spectrochemical series is:

  1. A F⁻ < I⁻ < Cl⁻ < H₂O
  2. B CO < CN⁻ < NH₃ < H₂O < F⁻ < Cl⁻ < I⁻
  3. C I⁻ < Cl⁻ < F⁻ < H₂O < NH₃ < CN⁻ < CO
  4. D NH₃ < H₂O < CN⁻ < CO

Answer: C. I⁻ < Cl⁻ < F⁻ < H₂O < NH₃ < CN⁻ < CO

Why: Strong-field ligands cause a large splitting of the d orbitals.

Question 4: Werner's Theory and Nomenclature

[Co(NH₃)₅NO₂]²⁺ and [Co(NH₃)₅ONO]²⁺ are:

  1. A geometrical isomers
  2. B optical isomers
  3. C ionisation isomers
  4. D linkage isomers

Answer: D. linkage isomers

Why: The nitrite ion is bonded through N in one and through O in the other.

Question 5: Coordination Number and Oxidation State

The coordination number of cobalt in [Co(en)₃]³⁺ is:

  1. A 9
  2. B 3
  3. C 6
  4. D 4

Answer: C. 6

Why: Each ethylenediamine is bidentate, giving 3 × 2 = 6 donor atoms.

Question 6: Werner's Theory and Nomenclature

The tetrahedral complexes of the type [MA₂B₂] do not show:

  1. A optical isomerism of any kind
  2. B colour
  3. C magnetic properties
  4. D geometrical isomerism

Answer: D. geometrical isomerism

Why: All the positions in a tetrahedron are equivalent.

Question 7: Coordination Number and Oxidation State

The crystal field stabilisation energy of a low-spin d⁶ octahedral complex is:

  1. A −1.2Δo
  2. B −0.4Δo
  3. C −2.4Δo
  4. D zero

Answer: C. −2.4Δo

Why: Six electrons in t₂g: 6 × (−0.4Δo).

Question 8: Werner's Theory and Nomenclature

The number of ions produced when [Co(NH₃)₆]Cl₃ dissolves in water is:

  1. A 3
  2. B 6
  3. C 4
  4. D 9

Answer: C. 4

Why: It gives one complex ion [Co(NH₃)₆]³⁺ and three Cl⁻ ions.

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Frequently asked questions

How many questions come from Coordination Compounds in NEET?

Coordination Compounds carries about 4.5% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 32 times, about 2.5 questions a year.

Which class is Coordination Compounds from?

Coordination Compounds is a Class 12 Chemistry chapter in the NCERT syllabus.

Where can I practise Coordination Compounds questions for NEET?

NeetVictory has 48 practice questions on Coordination Compounds, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.

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