Coordination Compounds JEE Advance Previous Year Questions with Solutions and Weightage

The most asked topics and questions from Coordinate Compounds in JEE Advanced are d-block elements' properties and electronic configurations which majorly come under Coordination Chemistry. The Coordination compounds contribute approximately 5% of the total Chemistry Weightage and account for 2-3 questions in the JEE Advanced exam 2025.

JEE Advanced previous year question papers and mock tests can assist IIT Aspirants to achieve higher rankings in JEE Advanced 2025.

Must Read Articles:

• Download JEE Advanced Syllabus 2025
• Download JEE Advanced 2024 Paper With Detailed Solutions
• JEE Advanced Previous Year Question Paper PDF Download

Listed below is the list of Coordinate Compounds questions with detailed solutions asked in the JEE advanced exam 2025:

Question 1:

Among the following complexes, the total number of diamagnetic species is ______.

[Mn(NH3)6]3+, [MnCl6]3−, [FeF6]3−, [CoF6]3−, [Fe(NH3)6]3+, and [Co(en)3]3+

[Given, atomic number: Mn = 25, Fe = 26, Co = 27;

en = H2NCH2CH2NH2]

View Solution

Question 2:

Among the following options, select the option in which each complex in Set-I shows geometrical isomerism and the two complexes in Set-II are ionization isomers of each other.

[en = H2NCH2CH2NH2]

• Set-I: [Ni(CO)4] and [PdCl2(PPh3)2]
• Set-II: [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl
• Set-I: [Co(en) (NH3)2Cl2] and [PdCl2(PPh3)2]
• Set-II: [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6][Co(CN)6]
• Set-I: [Co(NH3)3(NO2)3] and [Co(en)2Cl2]
• Set-II: [Co(NH3)5CI]SO4 and [Co(NH3)5(SO4)]Cl
• Set-I: [Cr(NH3)5CI]Cl2 and [Co(en) (NH3)2Cl2]
• Set-II: [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2H2O

View Solution

Question 3:

The calculated spin only magnetic moments of [Cr(NH3)6]3+ and [CuF6]3− in BM, respectively, are (Atomic number of Cr and Cu are 24 and 29, respectively)

• 3.87 and 2.84
• 4.90 and 1.73
• 3.87 and 1.73
• 4.90 and 2.84

View Solution

Question 4:

The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are)

(Note: py = pyridine, Given: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)

View Solution

Question 5:

The reaction of K3[Fe(CN)6] with freshly prepared FeSO4 solution produces a dark blue precipitate called Turnbull’s blue. The reaction of K4[Fe(CN)6] with the FeSO4 solution in the complete absence of air produces a white precipitate X, which turns blue in the air. Mixing the FeSO4 solution with NaNO3, followed by slow addition of concentrated H2SO4 through the side of the test tube produces a brown ring.

Precipitate X is

• Fe4[Fe(CN)6]3
• Fe4[Fe(CN)6]
• K2Fe[Fe(CN)6]
• KFe[Fe(CN)6]

View Solution

Question 6:

Choose the correct statement(s) among the following:

View Solution

Question 7:

The correct option(s) regarding the complex

[Co(en)(NH3)3(H2O)]3+(en=H2NCH2CH2NH2)

• It has two geometrical isomers
• It will have three geometrical isomers if bidentate ?en? is replaced by two cyanide ligands
• It is paramagnetic
• It absorbs light at longer wavelength as compared to [Co(en)(NH3)4]3+

View Solution

Question 8:

Addition of excess aqueous ammonia to a pink coloured aqueous solution of MCl2⋅6H2O(X) and NH4Cl gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue colured complex Z. The calculated spin only magnetic moment of X and Z is 3.87B.M., whereas it is zero for complex Y. Among the following options, which statement(s) is(are) correct ?

• Addition of silver nitrate to
• Y gives only two equivalents of silver chloride
• The hybridization of the central metal ion in Y is D2sp3 Z is a tetrahedral complex
• When X and Z are in equilibrium at 0 degrees C, the colour of the solution is pink

View Solution

Question 9:

Consider the following complex ions, P,Q and R.

P=[FeF6]3−,Q=[V(H2O)6]2+andR=[Fe(H2O)6]2+

The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is-

View Solution

Question 10:

The ionization isomer of [Cr(H2O)4Cl(NO2)]Cl is -

• [Cr(H2O)4(O2N)]Cl2​
• [Cr(H2O)4Cl2](NO2)
• [Cr(H2O)4Cl(ONO)]Cl
• ​[Cr(H2O)4Cl2(NO2)].H2O​

View Solution

JEE Advanced Exam Pattern 2025

The JEE Advanced exam consists of two papers i.e. 1 and 2 and it is compulsory for students to appear in both papers. Paper 1 will be conducted in the morning and Paper 2 in the afternoon. Students can appear for the exam in either of the languages English and Hindi.

JEE Advanced 2025 Exam Pattern Highlights

JEE Advanced Chapter-wise Weightage

The JEE Advanced chapter-wise weightage helps you understand which topics carry more importance in the exam. By focusing on high-weightage chapters, you can improve your exam preparation. For example, in Mathematics, topics like Calculus and Algebra usually carry about 50-60% of the questions, while in Physics, Mechanics and Electromagnetism contribute more.

JEE Advanced Exam – Topic-wise (Chemistry)

Detailed JEE Advanced 2025 Marking Scheme

Candidates must note that the JEE Advanced marking scheme will be the same for both Paper 1 and Paper 2. However, the marks allotted to each section of the subjects will be different. Here is the detailed marking scheme for each section of the exam paper:

Marking Scheme for Paper 1 and Paper 2

Previous Years’ Question Paper

JEE Advanced 2024 Question Paper PDF

JEE Advanced 2023 Question Paper PDF

JEE Advanced 2022 Question Paper PDF

JEE Advanced 2021 Question Paper PDF

JEE Advanced 2020 Question Paper

Frequently Asked Questions:

Q1. What is the toughest chapter in chemistry for JEE Advanced exam?

The toughest chapters in Chemistry for JEE Advanced have the following weightage:

Coordination Compounds (Inorganic Chemistry):

• Weightage: 9.9% (approximately 3-4 questions)
• This chapter is important for understanding geometry and bonding, which is usually considered difficult because of the depth of the subject.

Chemical Bonding and Molecular Structure (Inorganic Chemistry):

• Weightage: 6.6% (approximately 2 questions)
• An easy topic because of the basic understanding of concepts such as hybridization, molecular orbital theory, and polarity of the bond.

Thermodynamics (Physical Chemistry):

• Weightage: 6.6% (approximately 2 questions)
• This subject includes important concepts like entropy, enthalpy, and Gibbs free energy, which demands thorough conceptual understanding.

Q2. Are PYQs repeated in JEE Advanced exam?

No, PYQs are not repeated as such in the JEE Advanced exam. Whereas, the concept and nature of questions from previous years tend to come in some other form.

JEE Advanced generally tries to test the same fundamental subjects every year, so PYQs make you familiar with the pattern of the exam and common concepts.

Q3. Coordination Compounds JEE Advanced 2025 weightage

The Coordinate Compounds in the JEE Main holds approximately 9.9% weightage, which corresponds to about 3-4 questions in the exam.

Coordinate Chemistry is the part of inorganic Chemistry, the topics like coordination number, ligand types, isomerism, and bonding in coordination compounds are important to understand.

Q4. Coordination Compounds JEE Advanced Notes

Coordination Compounds is an important concept in Inorganic Chemistry for JEE Advanced. Coordination Compounds consist of a central metal atom or ion bonded to the surrounding ligands by coordinate bonds. These compounds have significant applications in various fields, including catalysis, medicine, and material science.

Q5. Which part of Chemistry has more weightage in the JEE Advanced exam?

As per the paper analysis, the weightage of Chemistry in JEE Advanced Paper is as follows:

• Physical and Inorganic Chemistry: Each contributes approximately 30% of the total Chemistry marks.​
• Organic Chemistry: It accounts for about 35% of the total Chemistry marks.

The JEE Main Chemistry important topics in each section are as follows: