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Coordination Compounds

107 Questions
All Exams NEET AIIMS
2013 NEET MCQ
NEET 2013
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
A.
0.003
B.
0.01
C.
0.001
D.
0.002
2012 NEET MCQ
AIPMT 2012 Mains
Low spin complex of d6-cation in an octahedral field will have the following energy
A.
${{ - 12} \over 5}{\Delta _o} + P$
B.
${{ - 12} \over 5}{\Delta _o} + 3P$
C.
${{ - 2} \over 5}{\Delta _o} + 2P$
D.
${{ - 2} \over 5}{\Delta _o} + P$
2012 NEET MCQ
AIPMT 2012 Mains
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 31 English
A.
Red complex has a square planar geometry.
B.
Complex has symmetrical H-bonding.
C.
Red complex has a tetrahedral geometry.
D.
Dimethylglyoxime functions as bidenate ligand.
2012 NEET MCQ
AIPMT 2012 Prelims
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
A.
[Ni(NH3)6]2+
B.
[Zn(NH3)6]2+
C.
[Cr(NH3)6]3+
D.
[Co(NH3)6]3+
2011 NEET MCQ
AIPMT 2011 Mains
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
(At. No. Ti = 22, Cr = 24, Co = 27, Zn = 30)
A.
[Cr (NH3)6] 3+
B.
[Co (NH3)6]3+
C.
[Zn (NH3)6]2+
D.
[Ti(NH3)6] 3+
2011 NEET MCQ
AIPMT 2011 Mains
Which of the following carbonyls will have the strongest C–O bond ?
A.
Cr (CO)6
B.
Fe (CO)5
C.
Mn (CO)6+
D.
V(CO)6-
2011 NEET MCQ
AIPMT 2011 Prelims
The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers ?
A.
3
B.
4
C.
0
D.
2
2011 NEET MCQ
AIPMT 2011 Prelims
Of the following complex ions, which is diamagnetic in nature?
A.
[NiCl4]2$-$
B.
[Ni(CN)4]2$-$
C.
[CuCl4]2$-$
D.
[CoF6]3$-$
2011 NEET MCQ
AIPMT 2011 Prelims
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)
A.
[Mn(H2O)6]2+
B.
[Fe(H2O)6]2+
C.
[Co(H2O)6]2+
D.
[Cr(H2O)6]2+
2011 NEET MCQ
AIPMT 2011 Prelims
Which of the following carbonyls will have the strongest C $-$ O bond?
A.
Mn(CO)6+
B.
Cr(CO)6
C.
V(CO)6$-$
D.
Fe(CO)5
2011 NEET MCQ
AIPMT 2011 Prelims
The complexes [Co(NH3)6] [Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism?
A.
Linkage isomerism
B.
Ionization isomerism
C.
Coordination isomerism
D.
Geometrical isomerism
2011 NEET MCQ
AIPMT 2011 Prelims
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
A.
[Ti(NH3)6]3+
B.
[Cr(NH3)6]3+
C.
[Co(NH3)6]3+
D.
[Zn(NH3)6]2+
2010 NEET MCQ
AIPMT 2010 Prelims
Which of the following complex ions is not expected to absorb visible light?
A.
[Ni(CN)4]2$-$
B.
[Cr(NH3)6]3+
C.
[Fe(H2O)6]2+
D.
[Ni(H2O)6]2+
2010 NEET MCQ
AIPMT 2010 Prelims
Crystal field stabilization energy for high spin d4 octahedral complex is
A.
$-$ 1.8 $\Delta $0
B.
$-$ 1.6 $\Delta $0 + P
C.
$-$ 1.2 $\Delta $0
D.
$-$ 0.6 $\Delta $0
2010 NEET MCQ
AIPMT 2010 Prelims
The existance of two different coloured complexes with the composition of [Co(NH3)4Cl2]+ is due to
A.
linkage isomerism
B.
geometrical isomerism
C.
coordination isomerism
D.
ionization isomerism.
2010 NEET MCQ
AIPMT 2010 Prelims
Which one of the following complexes is not expected to exhibit isomerism?
A.
[Ni(NH3)4(H2O)2]2+
B.
[Pt(NH3)2Cl2]
C.
[Ni(NH3)2Cl2]
D.
[Ni(en)3]2+
2009 NEET MCQ
AIPMT 2009
Out of TiF62$-$, CoF63$-$, Cu2Cl2 and NiCl42$-$ (Z of Ti = 22, Co = 27, Cu = 29, Ni = 28) the colourless species are
A.
Cu2Cl2 and NiCl42$-$
B.
TiF62$-$ and Cu2Cl2
C.
CoF63$-$ and NiCl42$-$
D.
TiF62$-$ and CoF63$-$
2009 NEET MCQ
AIPMT 2009
Which of the following does not show optical isomerism?

(en = ethylenediamine)
A.
[Co(NH3)3Cl3]0
B.
[Co(en)Cl2(NH3)2]+
C.
[Co(en)3]3+
D.
[Co(en)2Cl2]+
2009 NEET MCQ
AIPMT 2009
Which of the following complex ions is expected to absorb visible light?
(At. nos. Zn = 30, Sc = 21, Ti = 22, Cr = 24)
A.
[Ti(en)2(NH3)2]4+
B.
[Cr(NH3)6]3+
C.
[Zn(NH3)6]2+
D.
[Sc(H2O)3(NH3)3]3+
2008 NEET MCQ
AIPMT 2008
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)
A.
[Co(ox)2(OH)2]$-$
B.
[Ti(NH3)6]3+
C.
[V(gly)2(OH)2(NH3)2]+
D.
[Fe(en)(bpy)(NH3)2]2+
2008 NEET MCQ
AIPMT 2008
In which of the following coordination entities the magnitude of $\Delta $o (CFSE in octahedral field) will be maximum?
(At. No. Co = 27)
A.
[Co(CN)6]3$-$
B.
[Co(C2O4)3]3$-$
C.
[Co(H2O)6]3+
D.
[Co(NH3)6]3+
2007 NEET MCQ
AIPMT 2007
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)
A.
[Fe(H2O)6]2+
B.
[Ni(H2O)6]2+
C.
[Cr(H2O)6]2+
D.
[Mn(H2O)6]2+
2007 NEET MCQ
AIPMT 2007
Which of the following will give a pair of enantiomorphs?
(en = NH2CH2CH2NH2)
A.
[Cr(NH3)6][Co(CN)6]
B.
[Co(en)2Cl2]Cl
C.
[Pt(NH3)4][PtCl6]
D.
[Co(NH3)4Cl2]NO2
2006 NEET MCQ
AIPMT 2006
[Co(NH3)4(NO2)2]Cl exhibits
A.
linkage isomerism, geometrical isomerism and optical isomerism
B.
linkage isomerism, ionization isomerism and optical isomerism
C.
linkage isomerism, ionization isomerism and geometrical isomerism
D.
ionization isomerism, geometrical isomerism and oprical isomerism.
2006 NEET MCQ
AIPMT 2006
[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
A.
$3d_{x\,y}^1,\,3d_{y\,z}^1,\,3d_{z^2}^{1}$
B.
$3d_{\left( {x^2 - y^2} \right)}^1,\,3d_{z^2}^1,\,3d_{xz}^1$
C.
$3d_{x\,y}^1,\,\,3d_{\left( {x^2 - y^2} \right)}^1,\,3d_{y\,z}^1$
D.
$3d_{x\,y}^1,\,3d_{y\,z}^1,\,3d_{x\,z}^1$
2005 NEET MCQ
AIPMT 2005
Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine)
A.
cis-[Pt(NH3)2Cl2]
B.
trans-[Pt(NH3)2Cl2]
C.
cis-[Co(en)2Cl2]+
D.
trans-[Co(en)2Cl2]+
2005 NEET MCQ
AIPMT 2005
Which one of the following is an inner orbital complex as well as diamagnetic in behaviour?
A.
[Zn(NH3)6]2+
B.
[Cr(NH3)6]3+
C.
[Co(NH3)6]3+
D.
[Ni(NH3)6]2+
2004 NEET MCQ
AIPMT 2004
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]
A.
sp3, dsp2, dsp2
B.
sp3, dsp2, sp3
C.
sp3, sp3, dsp2
D.
dsp2, sp3, sp3
2004 NEET MCQ
AIPMT 2004
Considering H2O as a weak field ligand, the number of unpaired electrons in [Mn(H2O)6]2+ will be (atomic number of Mn = 25)
A.
three
B.
five
C.
two
D.
four
2004 NEET MCQ
AIPMT 2004
Which of the following does not have a metal carbon bond?
A.
Al(OC2H5)3
B.
C2H5MgBr
C.
K[Pt (C2H4)Cl3]
D.
Ni(CO)4
2004 NEET MCQ
AIPMT 2004
Which of the following is considered to be an anticancer species?
A.
AIPMT 2004 Chemistry - Coordination Compounds Question 30 English Option 1
B.
AIPMT 2004 Chemistry - Coordination Compounds Question 30 English Option 2
C.
AIPMT 2004 Chemistry - Coordination Compounds Question 30 English Option 3
D.
AIPMT 2004 Chemistry - Coordination Compounds Question 30 English Option 4
2004 NEET MCQ
AIPMT 2004
Which of the following coordination compounds would exhibit optical isomerism?
A.
Pentaamminenitrocobalt (III) iodide
B.
Diamminedichloroplatinum (II)
C.
trans-Dicyanobis (ethyleneddiamine) chromium (III) chloride
D.
tris-(Ethylenediamine) cobalt (III) bromide.
2004 NEET MCQ
AIPMT 2004
CN$-$ is a strong field ligand. This is due to the fact that
A.
it carries negative charge
B.
it is a pseudohalide
C.
it can accept electrons from metal species
D.
it forms high spin complexes with metal species.
2004 NEET MCQ
AIPMT 2004
In an octahedral structure, the pair of $d$ orbitals involved in d2sp3 hybridisation is
A.
d x2$-$y2, d z2
B.
d xz, d x2$-$y2
C.
d z2, d xz
D.
d xy, d yz
2003 NEET MCQ
AIPMT 2003
The number of unpaired electrons in the complex ion [CoF6]3$-$ is
(Atomic no. : Co = 27)
A.
2
B.
3
C.
4
D.
zero
2003 NEET MCQ
AIPMT 2003
Among the following which is not the $\pi $-bonded organometallic compound?
A.
K [PtCl3 ($\eta $2 $-$ C2H4)]
B.
Fe ($\eta $5 $-$ C5H5)2
C.
Cr ($\eta $6 $-$ C6H6)2
D.
(CH3)4Sn
2002 NEET MCQ
AIPMT 2002
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is
A.
a thin layer of Ag is formed on Cu
B.
more voltage is required
C.
Ag+ ions are completely removed from solution
D.
less availability of Ag+ ions, as Cu can not displace Ag from [Ag(CN)2]$-$ ion.
2002 NEET MCQ
AIPMT 2002
The hypothetical complex chloro diaquatriammine cobalt(III) chloride can be represented as
A.
[CoCl(NH3)3(H2O)2]Cl2
B.
[Co(NH3)3(H2O)Cl3]
C.
[Co(NH2)3(H2O)2Cl]
D.
[Co(NH3)3(H2O)3]Cl3
2002 NEET MCQ
AIPMT 2002
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
A.
K2[Cu(CN)4]
B.
K3[Cu(CN)4]
C.
CuCN2
D.
Cu[KCu(CN)4].
2002 NEET MCQ
AIPMT 2002
Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagetic with the spin of electron?
A.
[Cr(CO)6]
B.
[Fe(CO)5]
C.
[Fe(CN)6]4$-$
D.
[Cr(NH3)6]3+
2001 NEET MCQ
AIPMT 2001
Coordination number of Ni in [Ni(C2O4)3]4$-$ is
A.
3
B.
6
C.
4
D.
2
2001 NEET MCQ
AIPMT 2001
Which statement is incorrect?
A.
Ni(CO)4 $-$ tetrahedral, paramagnetic
B.
Ni(CN)4 - square planar, diamagnetic
C.
Ni(CO)4 - tetrahedral, diamagnetic
D.
[Ni(Cl)4]2$-$ - tetrahedral, paramagnetic.
2001 NEET MCQ
AIPMT 2001
Which of the following will exhibit maximum ionic conductivity?
A.
K4[Fe(CN)6]
B.
[Co(NH3)6]Cl3
C.
[Cu(NH3)4]Cl2
D.
[Ni(CO)4
2001 NEET MCQ
AIPMT 2001
Which of the following will give maximum number of isomers?
A.
[Co(NH3)4Cl2]
B.
[Ni(en)(NH3)4]2+
C.
[Ni(C2O4)(en)2]2$-$
D.
[Cr(SCN)2(NH3)4]+
2001 NEET MCQ
AIPMT 2001
Which of the following organometallic compounds is $\sigma $ and $\pi $ bonded?
A.
[Fe($\eta $5 $-$ C2H5)2]
B.
K[PtCl3($\eta $2 $-$ C2H4)]
C.
[Co(CO)5NH3]2+
D.
Fe(CH3)3
2000 NEET MCQ
AIPMT 2000
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
A.
K2[Cu(CN)4] more soluble
B.
K2[Cd(CN)4] less stable
C.
K2[Cu(CN)2] less stable
D.
K2[Cd(CN)3] more stable
2000 NEET MCQ
AIPMT 2000
Shape of Fe(CO)5 is
A.
octahedral
B.
square planar
C.
trigonal bipyramidal
D.
square pyramidal.
2000 NEET MCQ
AIPMT 2000
Which complex compound will give four isomers?
A.
[Fe(en)3]Cl3
B.
[Co(en)2Cl2]Cl
C.
[Fe(PPh3)3NH3ClBr]Cl
D.
[Co(PPh3)3Cl]Cl3
2019 AIIMS MCQ
AIIMS 2019

$\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$ is a

A.
low spin complex
B.
paramagnetic
C.
high spin
D.
$s p^3 d^2$-hybridised
2019 AIIMS MCQ
AIIMS 2019

Correct increasing order for the wavelength of absorption in the visible region for the complexes of $\mathrm{Co}^{3+}$ is

A.
$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+} \text {, } \left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{+2}$
B.
$\begin{aligned} & {\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}} \end{aligned}$
C.
$\begin{aligned} & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right) \mathrm{Cl}\right]^{+2}} \end{aligned}$
D.
$\begin{aligned} & {\left[\mathrm{Co}(\mathrm{NH})_5 \mathrm{Cl}\right]^{+2},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+},} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}} \end{aligned}$