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Coordination Compounds

110 Questions
All Exams NEET AIIMS
2015 NEET MCQ
AIPMT 2015 Cancelled Paper
Which of these statements about [Co(CN)6]3$-$ is true?
A.
[Co(CN)6]3$-$ has four unpaired electrons and will be in a high-spin configuration.
B.
[Co(CN)6]3$-$ has no unpaired electrons and will be in a high-spin configuration.
C.
[Co(CN)6]3$-$ has no unpaired electrons and will be in a low-spin configuration.
D.
[Co(CN)6]3$-$ has four unpaired electrons and will be in a low-spin configuration.
2015 NEET MCQ
AIPMT 2015 Cancelled Paper
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?
A.
CoCl3 $ \cdot $ 5NH3
B.
CoCl3 $ \cdot $ 6NH3
C.
CoCl3 $ \cdot $ 3NH3
D.
CoCl3 $ \cdot $ 4NH3
2014 NEET MCQ
AIPMT 2014
Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is
A.
[Mn(H2O)6]3+
B.
[Fe(H2O)6]3+
C.
[Co(H2O)6]2+
D.
[Co(H2O)6]3+
2014 NEET MCQ
AIPMT 2014
Which of the following complexes is used to be as an anticancer agent?
A.
mer-[Co(NH3)3Cl3]
B.
cis-PtCl2(NH3)2]
C.
cis-K2[PtCl2Br2
D.
Na2CoCl4
2013 NEET MCQ
NEET 2013 (Karnataka)
The anion of acetylacetone (acac) forms Co (acac)3 chelate with Co3+. The rings of the chelate are
A.
five membered
B.
four membered
C.
six membered
D.
three membered.
2013 NEET MCQ
NEET 2013 (Karnataka)
Which is diamagnetic?
A.
[Co(F)6]3$-$
B.
[Ni(CN)4]2$-$
C.
[NiCl4]2$-$
D.
[Fe(CN)6]3$-$
2013 NEET MCQ
NEET 2013 (Karnataka)
Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae?
A.
Fe3[Fe(CN)6]2
B.
Fe4[Fe(CN)6]3
C.
Fe4[Fe(CN)6]2
D.
Fe3[Fe(CN)6]3
2013 NEET MCQ
NEET 2013 (Karnataka)
Crystal field splitting energy for high spin d4 octahedral complex is
A.
$-$ 1.2 $\Delta $o
B.
$-$ 0.6 $\Delta $0
C.
$-$ 0.8 $\Delta $o
D.
$-$ 1.6 $\Delta $o
2013 NEET MCQ
NEET 2013 (Karnataka)
The correct IUPAC name for [CrF2(en)2]Cl is
A.
chloro difluorido ethylene diaminechromium (III) chloride
B.
difluoridobis (ethylene diamine) chromium (III) chloride
C.
difluorobis-(ethylene diamine) chromium (III) chloride
D.
chloro difluoridobis (ethylene diamine) chromium (III)
2013 NEET MCQ
NEET 2013 (Karnataka)
Which among the following is a paramagnetic complex?
A.
[Co(NH3)6]3+
B.
[Pt(en)Cl2]
C.
[CoBr4]$2-$
D.
Mo(CO)6
2013 NEET MCQ
NEET 2013 (Karnataka)
In a particular isomer of [Co(NH3)4Cl2]o, the Cl$-$Co$-$Cl angle is 90o, this isomer is known as
A.
optical isomer
B.
cis-isomer
C.
position isomer
D.
linkage isomer.
2013 NEET MCQ
NEET 2013
A magnetic moment at 1.73 BM will be shown by one among of the following
A.
TiCl4
B.
[CoCl6]4$-$
C.
[Cu(NH3)4]2+
D.
[Ni(CN)4]2$-$
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 34 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 33 English Option 1
B.
AIPMT 2004 Chemistry - Coordination Compounds Question 33 English Option 2
C.
AIPMT 2004 Chemistry - Coordination Compounds Question 33 English Option 3
D.
AIPMT 2004 Chemistry - Coordination Compounds Question 33 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