CBSE Class 12 Chemistry Coordination Compounds MCQs Set 05

Practice MCQs for Class 12 Chemistry Unit 5 Coordination Compounds

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Question: The IUPAC name of K2[Ni(CN)4 ] is 
(a) potassium tetracyanonickelate (II)
(b) potassium tetracyanatonickelate (III)
(c) potassium tetracyanatonickel (II)
(d) potassium tetracyanonickel (III)
Answer: a

Question: The number of ions fonned when hexaminecopper (II) sulphate is dissolved in water is 
(a) 1
(b) 2
(c) 4
(d) 6
Answer: b

Question: lUPAC name of K3Fe(CN)6 is 
(a) potassium ferricyanide
(b) hexacyano ferrate (III)
(c) potassium hexacyano ferrate (III)
(d) potassium hexacyano ferrate (II)
Answer: c

 Question: A solution containing 2.675 g of CoCI3 · 6NH3 (molarmass = 267 .5 g mol-1) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol-1 ) . The formula of the complex is (Atomic mass of Ag= 108 u) 
(a) [Co(NH3 )6 ]Cl3
(b) [CoCI2 (NH)3 ]4 Cl
(c)[CoCI3(NH3)3 ]
(d) [CoCl(NH3)5 ]Cl2
Answer: a

Question: The IUPAC name of K4[Ni(CN)4 ] is 
(a) tetrapotassium tetracyanonickelate (II)
(b) potassium tetracyanonickel (II)
(c) potassium tetracyanonickelate (0)
(d) potassium tetracyanonickelate (II)
Answer: c

Question: The oxidation number of cobalt in K[Co(CO)4] is
(a) + 1
(b) + 3
(c) – 1
(d) – 3
Answer: c

Question: The volume (in mL) of 0.1 M AgNO3 required for complete precipitation of chloride ions present in 30 mL of O.Ql M solution of[Cr(H2O)5 Cl] Cl2 , as silver chloride is close to
(a) 3
(b) 4
(c) 5
(d) 6
Answer: d

Question: The pair of [PtCl2 (NH3)4 ] Br2 and [PtBr2 (NH3)4 ]Cl2 constitutes a pair of 
(a) coordination isomers
(b) linkage isomers
(c) ionisation isomers
(d) optical isomers
Answer: c

Question: Which of the following is correct lUPAC name for K2 [Cr(CN)2O2(O)2 NH3]?
(a) Potassium amrninecyanoperoxodioxochromatic (III)
(b) Potassium amminecyanoperoxodioxochromium (II)
(c) Potassium amrninecyanoperoxodioxochromium (VI)
(d) Potassium amminedicyanodioxoperoxochromate (VI)
Answer: d

Question: Ammonia gas does not evolve from the complex FeCI3 · 4NH3 but is gives white precipitate with aqueous solution of AgNO3 . Coordination number of central metal ion in above complex is six. Give lUPAC name of the complex. 
(a) ammoniumtrichlorotriammineferrum (III)
(b) tetraammineroferrum (III) chloride
(c) dichlorotetraammineferrate (II) chloride
(d) dichlorotetraammineferrum (III) chloride
Answer: b

Question: Ethylene diarnine is an example of
(a) monodentate ligand
(b) bidentate ligand
(c) tridentate ligand
(d) polydentate ligand
Answer: b

Question: For square planar complex of platinum (II), [Pt(NH3 )(Br)(Cl)Py ]2+, how many isomeric forms are possible ? 
(a) Two
(b) Three
(c) Four
(d) Six
Answer: b

Question: Which of the following has on optical isomer ? 
(a) [Co(NH3)3 CI]+
(b) [Co(en)(NH3 )2]2+
(c) [Co(H2O)4 (en)]3+
(d) [Co( en)2(NH3 )2 ]3+
Answer: d

Question: Which is not true of the coordination compound [Co( en)2 Cl2 ]Cl ? 
(a) Exhibits geometrical isomerism
(b) Exhibits optical isomerism
(c) Exhibits ionisation isomerism
(d) Is an octahedral complex
(e) Is a cationic complex
Answer: c

Question: What is the IUPAC name of Na2[Fe(CN)5 NO]? 
(a) Pentacyanonitroso sodium ferrate
(b) Pentacyanonitroso sodium ferrate (II)
(c) Sodium pentacyanonitroso ferrate (II)
(d) Sodium pentacyanonitroso ferrate
Answer: c

Question: The ionisation isome rof [Cr(H2O)4 Cl(NO2)] a is
(a) [Cr(H2O)4 (O2N)] Cl2 
(b) [Cr(H2O)4 Cl2 ](NO2)
(c) [Cr(H2O)4 Cl(ONO)]Cl
(d) [Cr(H2O)4 Cl2 (NO2 )]· H2O
Answer: b

Question: Which of the following coordination compounds would exhibit optical isomerism ?
(a) Pentaamminenitrocobalt (ill) iodide
(b) Diamminedinitroplatinum (II)
(c) Trans-dicyanobis ( ethy lenediamine)
(d) Trans-(ethylenediamine) cobalt (III) bromide
Answer: d

 Question: Excess of silver nitrate solution is added to 100 mL of 0.01 M pentaaquachlorochromium (III) chloride solution. The mass of silver chloride obtained in grams is (atomic mass of silver is 108). 
(a) 287 x 10-3
(b) 143.5 x 10-3
(c) 143.5 x 10-2
(d) 287 x 10-2
Answer: a 

Question: Which of the following can exhibit geometrical isomerism?
(a) [MnBr4 ]2-
(b) [Pt(NH3)3 Cl]+ 
(c) [PtCl2 · P(C2H5 )3]2
(d) [Fe(H2O)5 NO]2+
Answer: c

Question: Fae-mer isomerism is associated with which one of the following complexes? [M = central metal] 
(a) [M (AA )2 ]
(b) [M A3B3 ]
(c) [M (AA )3 ]
(d) [M ABCD]
Answer: b

Question: Which of the following will not form optical isomers ?
(a) [Co(en)3 ]3+
(b) [Co(NH3)3 (NO2)3]
(c) [Pt(en)2 Cl2 ]2+
(d) [CrCI2 (ox)2 ]3-
Answer: b

Question: Which of the following complex species is not expected to exhibit optical isomerism ? 
(a) [Co(en)3 ]3+
(b) [Co(en)2 Cl2 ]+
(c) [Co(NH3 )3 Cl3 ]
(d) [Co(en)(NH3 )Cl2]
Answer: c

Question: Which of the following pairs represents linkage isomers ?
(a) [Cu(NH3 )4 ][PtCl4 ] and [Pt(NH3 )4 ][CuCl4 ]
(b) [Pd(PPh3 )2(NCS)2 ] and [Pd(PPh3 )2 (SCN)2 ]
(c) [Co(NH3)5 ]NO3SO4 and [Co(NH3)5 SO4 ]NO3
(d) [PtCl2 (NH3 )4 ]Br2 and [PtBr2 (NH3 )4 ]Cl2
Answer: b

Question: Which one of the following complex ions has geometrical isomers ?
(a) [Co(en)3 ]3+
(b) [Ni(NH3 )5 Br]+
(c) [Co (NH3 )2 (en)2 ]3+
(d) [Cr(NH3 )4 ( en)]3+
Answer: c

Question: The IUPAC name of[Co(NH3 )6 ] [Cr(C2O4)3] is
(a) hexaaminecobalt (III) tris (oxalato) chromium
(b) hexaaminecobalt (III) tris ( oxalato) chromate (III)
(c) hexaaminecobalt tris ( oxalato )chromium (III)
(d) hexaaminecobalt (III) chromium (III) oxalate
Answer: b

Question: The ratio of magnetic moment (spin only value) between [FeF6 ]3- and[Fe(CN)6 ]3- is approximately
(a) 4
(b) 2
(c) 5
(d) 3
Answer: d

Question: The coordination compounds,
[Co(NH3 )6 ]3+ [Cr(CN)6 ]3-
and [Cr(NH3 )6 ]3+[Co(CN)6 ]3- are the examples of
(a) linkage isomerism
(b) coordination isomerism
(c) ionisation isomerism
(d) geometrical isomerism
Answer: b

Question: The question when worked out will result in one integer from Oto 9 (both inclusive).
A list of species having the fommla XZ4 is given below
XeF4 , SF4 ,SiF4 , BF4, BrF4, [Cu(NH3 )4 ]2+
[FeCl4 ]2- , [CoCl4]2- and [PtCl4 ]2-
Defining shape on the basis of the location of X and Z atoms, the total number of species having a square planar shape is
(a) 3
(b) 2
(c) 4
(d) 6
Answer: c

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Unit 5 Coordination Compounds Objective Questions & Solutions for Class 12 Chemistry

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