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Previous year question hub

Coordination Compounds - Inorganic Chemistry - Chemistry Previous Year Questions

Practice Coordination Compounds - Inorganic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

11Papers
6Years
39Questions
1Topics

Coordination Compounds question pattern

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Questions by year

Year-wise coverage for Coordination Compounds. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 39 100%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 39 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
39 Qs

Most asked topics

Top topics across the included previous year papers.

Inorganic Chemistry
39 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Coordination Compounds
39 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

COMEDK 2025 AFTERNOON SHIFT
4 Qs
COMEDK 2025 Morning Shift
4 Qs
COMEDK 2025 EVENING SHIFT
3 Qs
COMEDK 2024 EVENING SHIFT
4 Qs
COMEDK 2024 AFTERNOON SHIFT
3 Qs
COMEDK 2024 MORNING SHIFT
3 Qs
COMEDK 2023 Morning Shift
6 Qs
COMEDK 2023 EVENING SHIFT
4 Qs
COMEDK 2022
2 Qs
COMEDK 2021
2 Qs
COMEDK 2020
4 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
COMEDK 2025 AFTERNOON SHIFT20254View paper
COMEDK 2025 EVENING SHIFT20253View paper
COMEDK 2025 Morning Shift20254View paper
COMEDK 2024 AFTERNOON SHIFT20243View paper
COMEDK 2024 EVENING SHIFT20244View paper
COMEDK 2024 MORNING SHIFT20243View paper
COMEDK 2023 EVENING SHIFT20234View paper
COMEDK 2023 Morning Shift20236View paper
COMEDK 202220222View paper
COMEDK 202120212View paper
COMEDK 202020204View paper

All Coordination Compounds previous year questions

Practice every matching question in batches of 20, with every available option.

1
2020 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2020

IUPAC name of Na\(_3\)[Co(NO\(_2\))\(_6\)] is

A
sodium cobaltonitrite
B
sodium hexanitrito cobaltate (III)
C
sodium hexanitro cobaltate (III)
D
sodium hexanitrito cobaltate (II)
Open complete paper
2
2020 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2020

Which complex cannot ionise in solution?

A
[Pt(NH\(_3\))\(_6\)]Cl\(_4\)
B
K\(_2\)[Pt(F\(_6\))]
C
K\(_4\)[Fe(CN)\(_6\)]
D
[CoCl\(_3\)(NH\(_3\))\(_3\)]
Open complete paper
3
2020 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2020

The number of unidentate ligands in the complex ion is called

A
EAN
B
coordination number
C
primary valency
D
oxidation number
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4
2020 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2020

The oxidation state of iron in K\(_4\)[Fe(CN)\(_6\)] is,

A
2
B
3
C
4
D
1
Open complete paper
5
2021 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2021

Which type of ligand is EDTA?

A
Monodentate
B
Hexadentate
C
Bidentate
D
Tridentate
Open complete paper
6
2021 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2021

The correct IUPAC name of the coordination compound K\(_3\)[Fe(CN)\(_5\)NO] is

A
potassium pentacyanonitrosylferrate (II)
B
potassium pentacyanonitro-N-ferrate (III)
C
potassium nitritopentacyanoferrate (IV)
D
potassium nitritopentacyanoiron (II)
Open complete paper
7
2022 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2022

The oxidation state of nickel in [Ni(CO\(_4\))] is

A
1
B
2
C
3
D
0
Open complete paper
8
2022 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2022

The complex which does not show optical isomerism is

A
cis \(-\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right] \mathrm{Cl}\)
B
cis \(-\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}\)
C
cis \(-\left[\mathrm{CoCl}(\mathrm{en})_2\left(\mathrm{NH}_3\right)\right]^{2+}\)
D
cis \(-\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}\)
Open complete paper
9
2023 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2023 EVENING SHIFT

Identify the correct IUPAC name of \([\mathrm{CoCl}_2(\mathrm{NO}_2)(\mathrm{NH}_3)_3]\)

A
Triamminedichloridonitrito- \(\mathrm{N}-\operatorname{cobalt}(\mathrm{III})\)
B
Dichloridotriamminenitrito-O-cobaltate(II)
C
Dichlorotriamminenitrito- \(\mathrm{N}-\operatorname{cobalt}(\mathrm{II})\)
D
Triamminedichloronitrito-O-cobaltate(III)
Open complete paper
10
2023 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2023 EVENING SHIFT

Which one of the following is an incorrect statement pertaining to the properties of Coordination compounds?

A
A square planar complex of the type Mabcd, where a, b, c and d are unidentate ligands, exhibits geometrical isomerism and exists in one cis-form and two trans-forms.
B
[\(\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{NO}_2\)] Cl2 exists in 2 forms, the red form and the yellow form which are linkage isomers.
C
\(\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}\) is called a Low spin complex.
D
Out of cis- \(\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}\) and trans- \(\left[\mathrm{CrCl}_2(\mathrm{ox})_2\right]^{3-}\), the trans isomer is optically inactive.
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11
2023 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2023 EVENING SHIFT

Which one of the following Coordination entities exhibits Facial and Meridional isomerism?

A
\(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3\left(\mathrm{NO}_2\right)_3\right]\)
B
\(\left[\mathrm{Co}(\text { en })_2 \mathrm{Cl}_2\right]^{+}\)
C
\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Br}_2\right] \mathrm{NO}_3\)
D
\(\left[\mathrm{Co}(\text { en })_3\right] \mathrm{Cl}_3\)
Open complete paper
12
2023 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2023 EVENING SHIFT

Match the Coordination compounds given in Column I with their characteristic features listed in Column II.

S.No. Coordination compounds S.No. Characteristic features
W $$
\[\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_3\]
$$
 P $$
\[\text { Oxidation state }=+3 \text { Configuration }=\mathrm{d}^5 \quad \mu=5.92 \mathrm{BM}\]
$$
X $$
\[\mathrm{K}_4\left[\mathrm{Mn}(\mathrm{CN})_6\right.\]
$$		 Q $$
\[\text { Oxidation state }=+3 \text { Configuration }=\mathrm{d}^3 \quad \mu=3.87 \mathrm{BM}\]
$$
Y $$
\[\left[\mathrm{CrCl}_3(\mathrm{py})_3\right]\]
$$		 R $$
\[\text { Oxidation state }=+3 \text { Configuration }=d^6 \quad \mu=0 \mathrm{BM}\]
$$
Z $$
\[\mathrm{Cs}\left[\mathrm{FeCl}_4\right]\]
$$		 S $$
\[\text { Oxidation state }=+2 \text { Configuration }=\mathrm{d}^5 \quad \mu=1.732 \mathrm{BM}\]
$$
A
\(\mathrm{W}=\mathrm{S} \quad \mathrm{X}=\mathrm{R} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{P}\)
B
\(\mathrm{W}=\mathrm{S} \quad \mathrm{X}=\mathrm{P} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{R}\)
C
\(\mathrm{W}=\mathrm{R} \quad \mathrm{X}=\mathrm{S} \quad \mathrm{Y}=\mathrm{P} \quad \mathrm{Z}=\mathrm{Q}\)
D
\(\mathrm{W}=\mathrm{R} \quad \mathrm{X}=\mathrm{S} \quad \mathrm{Y}=\mathrm{Q} \quad \mathrm{Z}=\mathrm{P}\)
Open complete paper
13
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 AFTERNOON SHIFT

On the basis of crystal field theory, electronic configuration of a low spin \(\mathrm{d}^4\) complex is:

A
\(t_{2 g}^1 e_g^3\)
B
\(t_{2 g}^4 e_g\)
C
\(t_{2 g}^3 e_g^1\)
D
\(t_{2 g}^2 e_g^2\)
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14
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 AFTERNOON SHIFT

The molar conductivity of the complex \(\mathrm{CoCl}_3 \cdot 4 \mathrm{NH}_3 \cdot 2 \mathrm{H}_2 \mathrm{O}\) is found to be the same as that of a \(1: 3\) electrolyte. The structural formula of the compound is :

A
\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right)_2\right] \mathrm{Cl}_3\)
B
\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}\left(\mathrm{H}_2 \mathrm{O}\right)\right] \mathrm{Cl}_2 \mathrm{H}_2 \mathrm{O}\)
C
\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{Cl}_2\right] \mathrm{Cl} \mathrm{H}_2 \mathrm{O}\)
D
\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right)_2 \mathrm{Cl}\right] \mathrm{Cl}_2\)
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15
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 AFTERNOON SHIFT

The type of hybridisation and the spin only magnetic moment for the complex \([\mathrm{Ni}(\mathrm{CO})_4]\) are respectively:

A
\(\mathrm{sp}^3, \sqrt{8} \mathrm{~BM}\)
B
\(\mathrm{dsp}^2\), zero
C
\(\mathrm{sp}^3\), zero
D
\(\mathrm{dsp}^2, \sqrt{8} \mathrm{~BM}\)
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16
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 EVENING SHIFT

Which of the following 2 compounds exhibit both Geometrical and Structural isomerism?

$$\begin{aligned} & \mathrm{A}=\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{NO}_2 \\ & \mathrm{~B}=\left[\mathrm{Co}\left(\mathrm{NH}_3\right) \mathrm{Br}\right] \mathrm{SO}_4 \\ & \mathrm{C}=\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3\left(\mathrm{NO}_2\right)_3\right] \\ & \mathrm{D}=\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3 \end{aligned}$$

A
A & C
B
C & B
C
B & D
D
A & B
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17
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 EVENING SHIFT

Based on Valence Bond Theory, match the complexes listed in Column I with the number of unpaired electrons on the central metal ion, given in Column II

No. Complex ions No. Number of unpaired electrons
(A) $$
\[\left[\mathrm{Fe} \mathrm{F}_6\right]^{3-}\]
$$		 (P) 0
(B) $$
\[\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}\]
$$		 (P) 1
(C) $$
\[\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\]
$$		 (R) 5
(D) $$
\[\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}\]
$$		 (S) 4
A
\(\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{Q} \quad \mathrm{C}=\mathrm{R} \quad \mathrm{D}=\mathrm{P}\)
B
\(\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{Q} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{R}\)
C
\(\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{P} \quad \mathrm{C}=\mathrm{S} \quad \mathrm{D}=\mathrm{Q}\)
D
\(\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}\)
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18
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 EVENING SHIFT

Given below are 4 statements. Two of these are correct statements. Identify them.

A. \(\mathrm{Co}^{2+}\) is easily oxidised to \(\mathrm{Co}^{3+}\) in the presence of a strong ligand like \(\mathrm{CN}^{-}\)

B. \([\mathrm{Fe}(\mathrm{CN})_6]^{4-}\) is an octahedral complex ion which is paramagnetic in nature.

C. Removal of \(\mathrm{H}_2 \mathrm{O}\) molecules from \([\mathrm{Ti}(\mathrm{H}_2 \mathrm{O})_6] \mathrm{Cl}_3\) on strong heating converts it to a colourless compound.

D. Crystal Field splitting in Octahedral and Tetrahedral complexes is given by the equation \(\Delta_0=4 / 9 \Delta_t\)

A
A & C
B
A & D
C
B & D
D
C & B
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19
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 EVENING SHIFT

Based on Crystal Field theory, match the Complex ions listed in Column I with the electronic configuration in the d orbitals of the central metal ion listed in Column II.

No. Complexion No. d orbital configuration of central metal ion.
(A) $$
\[\left[M n(C N)_6\right]^{4-}\]
$$		 (P) $$
e_g^2 t_{2 g}^3
$$
(B) $$
\[\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\]
$$		 (Q) $$
t_{2 g}^4 e_g^2
$$
(C) $$
\[\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\]
$$		 (R) $$
t_{2 g}^5
$$
(D) $$
\[\left[\mathrm{MnCl}_4\right]^{2-}\]
$$		 (S) $$
t_{2 g}^5 e_g^2
$$
A
\(\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{Q}\)
B
\(\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}\)
C
\(\mathrm{A}=\mathrm{Q} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{R}\)
D
\(\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{Q}\)
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20
2024 · Chemistry · Inorganic Chemistry · Coordination Compounds
COMEDK 2024 MORNING SHIFT

Choose the incorrect statement from the following.

A
A tetrahedral complex of the type \([\mathrm{Ma}_2 \mathrm{b}_2]\) does not show geometrical isomerism
B
Coordination entities of the type \([\mathrm{Ma}_3 \mathrm{b}_3]\) do not exhibit geometrical isomerism
C
Square planar complex  of the type [Mabcd] has 3 possible geometrical isomers
D
In a coordination entity of the type \([\mathrm{Ma} 2(\mathrm{bb})_2]^{2+}\) only the cis-isomer is optically active
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Showing 20 of 39 questions