Coordination Compounds · Chemistry · NEET

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MCQ (Single Correct Answer)

1

Ethylene diaminetetraacetate ion is a/an:

NEET 2024 (Re-Examination)
2

Which of the following is not an ambidentate ligand?

NEET 2024 (Re-Examination)
3

$$\left[\mathrm{Mn}_2(\mathrm{CO})_{10}\right]$$ and $$\left[\mathrm{Co}_2(\mathrm{CO})_8\right]$$ structures have

A. Metal-Metal linkage

B. Terminal CO groups

C. Bridging CO groups

D. Metal in zero oxidation state

Choose the correct answer from the options given below

NEET 2024 (Re-Examination)
4

Match List I with List II.

List I
(Complex)
List II
(Type of isomerism)
A. $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}_2
$$
I. Solvate isomerism
B. $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_4\right)\right] \mathrm{Br}
$$
II. Linkage isomerism
C. $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]\left[\mathrm{Cr}(\mathrm{CN})_6\right]
$$
III. Ionization isomerism
D. $$
\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3
$$
IV. Coordination isomerism

Choose the correct answer from the options given below:

NEET 2024
5

Given below are two statements :

Statement I: Both $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ and $$[\mathrm{CoF}_6]^{3-}$$ complexes are octahedral but differ in their magnetic behaviour.

Statement II: $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ is diamagnetic whereas $$[\mathrm{CoF}_6]^{3-}$$ is paramagnetic.

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

NEET 2024
6

Given below are two statements :

Statement I : $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ is a homoleptic complex whereas $$[\mathrm{Co}(\mathrm{NH}_3)_4 \mathrm{Cl}_2]^{+}$$ is a heteroleptic complex.

Statement II : Complex $$[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}$$ has only one kind of ligands but $$[\mathrm{Co}(\mathrm{NH}_3)_4 \mathrm{Cl}_2]^{+}$$ has more than one kind of ligands.

In the light of the above statements, choose the correct answer from the options given below.

NEET 2024
7

Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [M(H$$_2$$O$$_6$$]$$^{3+}$$

NEET 2023 Manipur
8

Which of the following forms a set of complex and a double salt, respectively?

NEET 2023 Manipur
9

Type of isomerism exhibited by compounds $$ \left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6 \mathrm{Cl}_3,\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}_2 \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O}\right.\right.,\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl} .2 \mathrm{H}_2 \mathrm{O}$$ and the value of coordination number $$(\mathrm{CN})$$ of central metal ion in all these compounds, respectively is :

NEET 2023 Manipur
10

Homoleptic complex from the following complexes is :

NEET 2023
11

Which complex compound is most stable?

NEET 2023
12

Match List-I with List-II :

List-I
(Complexes)
List-II
(Types)
(a) $$[Co{(N{H_3})_5}N{O_2}]C{l_2}$$ and $$[Co{(N{H_3})_5}ONO]C{l_2}$$ (i) ionisation isomerism
(b) $$[Cr{(N{H_3})_6}][Co{(CN)_6}]$$ and $$[Cr{(CN)_6}][Co{(N{H_3})_6}]$$ (ii) coordination isomerism
(c) $$[Co{(N{H_3})_5}(S{O_4})]Br$$ and $$[Co{(N{H_3})_5}Br]S{O_4}$$ (iii) linkage isomerism
(d) $$[Cr{({H_2}O)_6}]C{l_3}$$ and $$[Cr{({H_2}O)_5}Cl]C{l_2}\,.\,{H_2}O$$ (iv) solvate isomerism

Choose the correct answer from the options given below :

NEET 2022 Phase 2
13

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The metal carbon bond in metal carbonyls possesses both $$\sigma$$ and $$\pi$$ character.

Reason (R) : The ligand to metal bond is a $$\pi$$ bond and metal to ligand bond is a $$\sigma$$ bond.

In the light of the above statements, choose the most appropriate answer from the options given below.

NEET 2022 Phase 2
14

The IUPAC name of the complex -

[Ag(H2O)2][Ag(CN)2] is:

NEET 2022 Phase 1
15

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

NEET 2022 Phase 1
16
Ethylene diaminetetraacetate (EDTA) ion is :
NEET 2021
17
Match List-I with List-II :

List-I List-II
(a) $${[Fe{(CN)_6}]^{3 - }}$$ (i) 5.92 BM
(b) $${[Fe{({H_2}O)_6}]^{3 + }}$$ (ii) 0 BM
(c) $${[Fe{(CN)_6}]^{4 - }}$$
(iii) 4.90 BM
(d) $${[Fe{({H_2}O)_6}]^{2 + }}$$
(iv) 1.73 BM


Choose the correct answer from the options given below.
NEET 2021
18
The calculated spin only magnetic moment of Cr2+ ion is?
NEET 2020 Phase 1
19
Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following?
NEET 2020 Phase 1
20
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
NEET 2020 Phase 1
21
What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory?
NEET 2019
22
The geometry and magnetic behaviour of the complex [Ni(CO)4] are
NEET 2018
23
The type of isomerism shown by the complex [CoCl2(en)2] is
NEET 2018
24
Iron carbonyl, Fe(CO)5 is
NEET 2018
25
Pick out the correct statement with respect to [Mn(CN)6]3$$-$$.
NEET 2017
26
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co3+ is
NEET 2017
27
An example of a sigma bonded organometallic compound is
NEET 2017
28
The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes : CoCl3.6NH3, CoCl3.5NH3, CoCl3.4NH3 respectively is
NEET 2017
29
The correct increasing order of trans-effect of the following species is
NEET 2016 Phase 2
30
Jahn-Teller effect is not observed in high spin complexes of
NEET 2016 Phase 2
31
Which of the following has longest C$$-$$O bond length? (Free C$$-$$O bond length in CO is 1.128 $$\mathop A\limits^o $$.)
NEET 2016 Phase 1
32
The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is
AIPMT 2015
33
The name of complex ion, [Fe(CN)6]3$$-$$ is
AIPMT 2015
34
The hybridization involved in complex [Ni(CN)4]$$2-$$ is (At. No. Ni = 28)
AIPMT 2015
35
Number of possible isomers for the complex [Co(en)2Cl2]Cl will be (en = ethylenediamine)
AIPMT 2015
36
Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25oC?
AIPMT 2015 Cancelled Paper
37
Which of these statements about [Co(CN)6]3$$-$$ is true?
AIPMT 2015 Cancelled Paper
38
Which of the following complexes is used to be as an anticancer agent?
AIPMT 2014
39
Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is
AIPMT 2014
40
Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae?
NEET 2013 (Karnataka)
41
Which among the following is a paramagnetic complex?
NEET 2013 (Karnataka)
42
The correct IUPAC name for [CrF2(en)2]Cl is
NEET 2013 (Karnataka)
43
In a particular isomer of [Co(NH3)4Cl2]o, the Cl$$-$$Co$$-$$Cl angle is 90o, this isomer is known as
NEET 2013 (Karnataka)
44
The anion of acetylacetone (acac) forms Co (acac)3 chelate with Co3+. The rings of the chelate are
NEET 2013 (Karnataka)
45
Which is diamagnetic?
NEET 2013 (Karnataka)
46
Crystal field splitting energy for high spin d4 octahedral complex is
NEET 2013 (Karnataka)
47
A magnetic moment at 1.73 BM will be shown by one among of the following
NEET 2013
48
An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitated would be
NEET 2013
49
Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II). Which of the following statements is not true?
AIPMT 2012 Mains Chemistry - Coordination Compounds Question 28 English
AIPMT 2012 Mains
50
Low spin complex of d6-cation in an octahedral field will have the following energy
AIPMT 2012 Mains
51
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
AIPMT 2012 Prelims
52
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
(At. No. Ti = 22, Cr = 24, Co = 27, Zn = 30)
AIPMT 2011 Mains
53
Which of the following carbonyls will have the strongest C–O bond ?
AIPMT 2011 Mains
54
The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers ?
AIPMT 2011 Prelims
55
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
AIPMT 2011 Prelims
56
Which of the following carbonyls will have the strongest C $$-$$ O bond?
AIPMT 2011 Prelims
57
Of the following complex ions, which is diamagnetic in nature?
AIPMT 2011 Prelims
58
The complexes [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism?
AIPMT 2011 Prelims
59
The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)
AIPMT 2011 Prelims
60
The existance of two different coloured complexes with the composition of [Co(NH3)4Cl2]+ is due to
AIPMT 2010 Prelims
61
Which of the following complex ions is not expected to absorb visible light?
AIPMT 2010 Prelims
62
Crystal field stabilization energy for high spin d4 octahedral complex is
AIPMT 2010 Prelims
63
Which one of the following complexes is not expected to exhibit isomerism?
AIPMT 2010 Prelims
64
Which of the following complex ions is expected to absorb visible light?
(At. nos. Zn = 30, Sc = 21, Ti = 22, Cr = 24)
AIPMT 2009
65
Out of TiF62$$-$$, CoF63$$-$$, Cu2Cl2 and NiCl42$$-$$ (Z of Ti = 22, Co = 27, Cu = 29, Ni = 28) the colourless species are
AIPMT 2009
66
Which of the following does not show optical isomerism?

(en = ethylenediamine)
AIPMT 2009
67
In which of the following coordination entities the magnitude of $$\Delta $$o (CFSE in octahedral field) will be maximum?
(At. No. Co = 27)
AIPMT 2008
68
Which of the following complexes exhibits the highest paramagnetic behaviour?
where gly = glycine, en = ethylenediamine and bpy = bipyridyl moities.
(At. nos. Ti = 22, V = 23, Fe = 26, Co = 27)
AIPMT 2008
69
Which of the following will give a pair of enantiomorphs?
(en = NH2CH2CH2NH2)
AIPMT 2007
70
The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?

(At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
AIPMT 2007
71
[Co(NH3)4(NO2)2]Cl exhibits
AIPMT 2006
72
[Cr(H2O)6]Cl3 (At. no. of Cr = 24) has a magnetic momen of 3.83 B.M. The correct distribution of 3d electrons in the chromium of the complex is
AIPMT 2006
73
Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine)
AIPMT 2005
74
Which one of the following is an inner orbital complex as well as diamagnetic in behaviour?
AIPMT 2005
75
Among [Ni(CO)4], [Ni(CN)4]2$$-$$, [NiCl4]2$$-$$ species, the hybridisation states at the Ni atom are, respectively
[Atomic number of Ni = 28]
AIPMT 2004
76
Which of the following is considered to be an anticancer species?
AIPMT 2004
77
Which of the following coordination compounds would exhibit optical isomerism?
AIPMT 2004
78
In an octahedral structure, the pair of $$d$$ orbitals involved in d2sp3 hybridisation is
AIPMT 2004
79
Which of the following does not have a metal carbon bond?
AIPMT 2004
80
CN$$-$$ is a strong field ligand. This is due to the fact that
AIPMT 2004
81
Considering H2O as a weak field ligand, the number of unpaired electrons in [Mn(H2O)6]2+ will be (atomic number of Mn = 25)
AIPMT 2004
82
Among the following which is not the $$\pi $$-bonded organometallic compound?
AIPMT 2003
83
The number of unpaired electrons in the complex ion [CoF6]3$$-$$ is
(Atomic no. : Co = 27)
AIPMT 2003
84
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is
AIPMT 2002
85
CuSO4 when reacts with KCN forms CuCN, which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex
AIPMT 2002
86
The hypothetical complex chloro diaquatriammine cobalt(III) chloride can be represented as
AIPMT 2002
87
Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagetic with the spin of electron?
AIPMT 2002
88
Which of the following will give maximum number of isomers?
AIPMT 2001
89
Coordination number of Ni in [Ni(C2O4)3]4$$-$$ is
AIPMT 2001
90
Which statement is incorrect?
AIPMT 2001
91
Which of the following organometallic compounds is $$\sigma $$ and $$\pi $$ bonded?
AIPMT 2001
92
Which of the following will exhibit maximum ionic conductivity?
AIPMT 2001
93
In quantitative analysis of second group in laboratory, H2S gas is passed in acidic medium for precipitation. When Cu2+ react with KCN, then for product, true statement is
AIPMT 2000
94
Shape of Fe(CO)5 is
AIPMT 2000
95
Which complex compound will give four isomers?
AIPMT 2000
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