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Coordination Compounds

Previous year questions with solutions · 2000 – 2026

101Questions
35Papers covered
8.89% ↑33.3%Weightage in 2026
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Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20268248.89% ↑33.3%
20253136.67% ↑12.2%
20246235.94% ↑51.5%
20232123.92% ↓1%
20224223.96% ↓1%
20212124.00% ↑80%
20201112.22% →0%
20191112.22% ↓75%
20184148.89% →0%
20174148.89% ↑166.7%
2016321.53.33% ↓50%
20156236.67% ↑50%
20142124.44% ↓50.6%
20138248.99% ↑139.7%
2012321.53.75% ↓62%
20118249.88% ↑97.5%
20104225.00% ↑27.5%
20092123.92% →0%
20082123.92% ↓2%
20072124.00% →0%
20062124.00% →0%
20052124.00% ↓72.6%
200471714.58% ↑138.2%
20033136.12% ↓23.5%
20024148.00% ↓18.4%
20015159.80% ↑66.7%
20003135.88%

101 questions · newest paper first · page 1 of 4

1

Match List I with List II :

  1. A-I, B-III, C-IV, D-II
  2. A-III, B-IV, C-I, D-II
  3. A-III, B-I, C-IV, D-II
  4. A-IV, B-I, C-III, D-II
NEET (UG) 2026
2

Which one of the following is an ambidentate ligand?

  1. Oxalate
  2. Ethane-1,2-diamine
  3. Thiocyanate
  4. Ethylenediaminetetraacetate ion
NEET (UG) 2026
3

The formula of tetraammineaquachloridocobalt(III) chloride is

  1. [Co(NH3)4(H2O)Cl]Cl2
  2. [Co(NH3)4Cl2] H2O
  3. [Co(NH3)4]Cl3 H2O
  4. [Co(NH3)4(H2O)Cl]Cl
RE-NEET (UG) 2026
4

Given below are two statements: (Given : oxH2 = HOOC - COOH) In light of the above statements, choose the most appropriate answer from the options given below:

  1. Statement I is incorrect but Statement II is correct
  2. Both Statement I and Statement II are correct
  3. Both Statement I and Statement II are incorrect
  4. Statement I is correct but Statement II is incorrect
RE-NEET (UG) 2026
5

The complex which has facial and meridional isomers is (Given : py = pyridine and en = H2N-CH2-CH2-NH2)

  1. [Ni(en)2(H2O)2]2+
  2. [Cr(py)3(Cl)3]
  3. [Cr(H2O)6]3+
  4. [Co(NH3)4(H2O)2]3+
RE-NEET (UG) 2026
6

A 1 : 3 electrolyte in an aqueous solution is

  1. [Co(NH3)3(NO2)3]
  2. [CoCl2(NH3)4]Cl
  3. [CoCl(NH3)5]Cl2
  4. [Co(NH3)6]Cl3
RE-NEET (UG) 2026
7

According to crystal field theory, the correct order of ligands with respect to their decreasing order of field strength is

  1. Cl- > NH3 > H2O > CO
  2. CO > NH3 > H2O > Cl-
  3. CO > H2O > NH3 > Cl-
  4. Cl- > H2O > NH3 > CO
RE-NEET (UG) 2026
8

Among the species given below, the spin-only magnetic moment is highest for (Given: Atomic number of Ti = 22, Mn = 25, Fe = 26 and Co = 27)

  1. [Ti(H2O)6]3+
  2. [Mn(CN)6]3-
  3. [Fe(CN)6]3-
  4. [Co(NH3)6]3+
RE-NEET (UG) 2026
9

Out of the following complex compounds, which of the compound will be having the minimum conductance solution?

  1. [Co(NH3)6]Cl3
  2. [Co(NH3)5Cl]Cl
  3. [Co(NH3)3Cl3]
  4. [Co(NH3)4Cl2]
NEET (UG) 2025
10

Which of the following are paramagnetic? Choose the correct answer from the options given below :

  1. A and D only
  2. A, D and E only
  3. A and C only
  4. B and E only
NEET (UG) 2025
11

The correct order of the wavelength of light absorbed by the following complexes is, A. [Co(NH3)6]3+ B. [Co(CN)6]3- C. [Cu(H2O)4]2+ D. [Ti(H2O)6]3+ Choose the correct answer from the options given below:

  1. C < D < A < B
  2. C < A < D < B
  3. B < D < A < C
  4. B < A < D < C
NEET (UG) 2025
12

Match List I with List II. Choose the correct answer from the options given below:

  1. A-II, B-III, C-IV, D-I
  2. A-I, B-III, C-IV, D-II
  3. A-I, B-IV, C-III, D-II
  4. A-II, B-IV, C-III, D-I
NEET (UG) 2024
13

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below:

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
NEET (UG) 2024
14

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below.

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
NEET (UG) 2024
15

Ethylene diaminetetraacetate ion is a/an:

  1. hexadentate ligand
  2. ambidentate ligand
  3. monodentate ligand
  4. bidentate ligand
RE-NEET (UG) 2024
16

Which of the following is not an ambidentate ligand?

  1. C2O42-
  2. SCN-
  3. NO2-
  4. CN-
RE-NEET (UG) 2024
17

[ Mn2(CO)10] and [Co2(CO)8] structures have Choose the correct answer from the options given below

  1. Only A, B, C
  2. Only B, C, D
  3. Only A, C, D
  4. Only A, B, D
RE-NEET (UG) 2024
18

Homoleptic complex from the following complexes is:

  1. Diamminechloridonitrito-N-platinum(II)
  2. Pentaamminecarbonatocobalt(III) chloride
  3. Triamminetriaquachromium(III) chloride
  4. Potassium trioxalatoaluminate(III)
NEET (UG) 2023
19

Which complex compound is most stable?

  1. [Co(NH3)3(NO3)3]
  2. [CoCl2(en)2]NO3
  3. [Co(NH3)6]2(SO4)3
  4. [Co(NH3)4(H2O)Br](NO3)2
NEET (UG) 2023
20

The IUPAC name of the complex [Ag(H2O)2][Ag(CN)2] is:

  1. dicyanidosilver(II) diaquaargentate(II)
  2. diaquasilver(II) dicyanidoargentate(II)
  3. dicyanidosilver(I) diaquaargentate(I)
  4. diaquasilver(I) dicyanidoargentate(I)
NEET (UG) 2022
21

The order of energy absorbed which is responsible for the color of complexes (A) [Ni(H2O)2(en)2]2+ (B) [Ni(H2O)4(en)]2+ and (C) [Ni(en)3]2+ is

  1. (A) > (B) > (C)
  2. (C) > (B) > (A)
  3. (C) > (A) > (B)
  4. (B) > (A) > (C)
NEET (UG) 2022
22

Match List-I with List-II : Choose the correct answer from the options given below :

  1. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
  2. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
  3. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  4. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
NEET (UG) 2022 (Phase 2)
23

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below.

  1. (A) is not correct but (R) is correct
  2. Both (A) and (R) are correct and (R) is the correct explanation of (A)
  3. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  4. (A) is correct but (R) is not correct
NEET (UG) 2022 (Phase 2)
24

Ethylene diaminetetraacetate (EDTA) ion is :

  1. Tridentate ligand with three "N" donor atoms
  2. Hexadentate ligand with four "O" and two "N" donor atoms
  3. Unidentate ligand
  4. Bidentate ligand with two "N" donor atoms
NEET (UG) 2021
25

Match List-I with List-II : Choose the correct answer from the options given below.

  1. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  2. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
  3. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  4. (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
NEET (UG) 2021
26

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

  1. SCN- < F- < CN- < C2O42-
  2. F- < SCN- < C2O42- < CN-
  3. CN- < C2O42- < SCN- < F-
  4. SCN- < F- < C2O42- < CN-
NEET (UG) 2020
27

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory?

  1. t2g4 eg2
  2. t2g6 eg0
  3. e3 t23
  4. e4 t22
NEET (UG) 2019
28

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :

  1. (a)-(iv), (b)-(v), (c)-(ii), (d)-(i)
  2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  3. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  4. (a)-(iii), (b)-(v), (c)-(i), (d)-(ii)
NEET 2018
29

The type of isomerism shown by the complex [CoCl2(en)2] is

  1. geometrical isomerism
  2. coordination isomerism
  3. ionization isomerism
  4. linkage isomerism
NEET 2018
30

The geometry and magnetic behaviour of the complex [Ni(CO)4] are

  1. square planar geometry and diamagnetic
  2. tetrahedral geometry and diamagnetic
  3. square planar geometry and paramagnetic
  4. tetrahedral geometry and paramagnetic
NEET 2018