CBSE Class 12 Chemistry Coordination Compounds MCQs Set 04

Question: The lUPAC name of the complex [Co(NH₃ )₄ Cl₂ ]Cl is
(a) dichlorotetraamminecobalt (III) chloride
(b) tetraamminedichlorocobalt (III) chloride
(c) tetraamminedichlorocobalt (II) chloride
(d) tetraamminedichlorocobalt (IV) chloride
Answer: b

Question: In which year, IUPAC draft recommends that anionic ligands will end with iodo so that chloro would become chiorido? 
(a) 1994
(b) 1984
(c) 2000
(d) 2004
Answer: d

Question: A complex compound of Co³⁺ with molecular formula CoCl_x · yNH₃ gives a total of 3 ions when dissolved in water. How many Cl^– ions satisfy both primary and secondary valencies in this complex?
(a) 3
(b) 1
(c) 4
(d) zero
Answer: b

Question: The IUPAC name of [Ni(PPh₃ )₂ Cl₂ ]²⁺ is 
(a) bisdichloro(triphenylphosphine )nickel (II)
(b) dichlorobis(triphenylphosphine )nickel (II)
(c) dichlorotriphenylphosphinenickel(II)
(d) triphenylphosphinenickel (II) dichloride
Answer: b

 Question: The pair(s) of coordination complexes/ions exhibiting the same kind of isomerism is (are) 
(a) [Cr(NH₃)₅ Cl] Cl₂ and [Cr(NH₃ )₄ Cl₂ ]Cl
(b) [Co(NH₃ )₄ Cl₂ ]⁺ and [Pt(NH₃ )₂ (H₂O)Cl]⁺
(c) [CoBr₂Cl₂ ]^2- and [PtBr₂ Cl₂ ]^2-
(d) [Pt(NH₃ )₃ (NO₃ )] Cl and [Pt(NH₃ )₃ Cl] Br
Answer: d

Question: The existence of two different coloured complexes of [Co(NH₃)₄Cl₂ ]⁺ is due to 
(a) ionisation isomerism
(b) coordination isomerism
(c) linkage isomerism
(d) geometrical isomerism
Answer: d

Question: Pick out the complex compound in which the central metal atom obeys EAN mle strictly. 
(a) K₄[Fe(CN)₆]
(b) K₃[Fe(CN)₆ ]
(c)[Cr(H₂O)₆ ]Cl₃
(d)[Cu(NH₃)₄] SO₄
Answer: a

Question: The IUP AC name of the complex ion formed when gold dissolves in aqua-regia is 
(a) tetrachloridoaurate (III)
(b) tetrachloridoaurate (I)
(c) tetrachloridoaurate (II)
(d) dichloridoaurate (III)
Answer: a

Question: Th IUPAC name of the compound [CuCl₂ (CH₃NH₂)₂] is
(a) dichloro bis (dimethylamine) copper (II) 
(b) dichloro bis (methylamine) copper (II)
(c) dimethylaminecopper (II) chloride
(d) bis(dimethylamine) copper (II) chloride
Answer: b

Question: The colour in the coordination compounds can be readily explained in terms of
(a) spectrochemistry
(b) chelate effect
(c) crystal field theory
(d) None of these
Answer: c

Question: Which of the following is correct statement?
(a) [Co(NH₃ )₆ ]²⁺ is paramagnetic
(b) [MnBr₄ ]^2- is tetrahedral
(c) [CoBr₂ (en)₂]^– exhibits linkage isomerism
(d) [Ni(NH₃ )₆ ]²⁺ is an inner orbital complex
Answer: a,b

Question: The IUPAC name of compound K₃ [Fe(CN)₅ NO] is
(a) pentacyano nitrosyl potassium ferrate (II) 
(b) potassium cyano pentanitrosyl ferrate (II)
(c) potassium pentacyanonitrosyl ferrate (III)
(d) potassium pentacyanonitrosyl ferrate (II)
Answer: d

Question: According to IUP AC system, what is the correct name of the compound [Cr(NH₃)₃ (H₂O)₃ Cl₃ ] 
(a) Ttriamminetriaquachromium (III) chloride
(b) Triamminetriaquachromiumchloride (III)
(c) Tetraammoniumtriaquachromium (III) chloride
(d) None of the above
Answer: a

Question: Total number of geometrical isomers for the complex [RhCl(CO)(PPh₃)(NH₂)] is 
(a) 1
(b) 2
(c) 3
(d) 4
Answer: c

Question: Benzoylacetonato beryllium exhibit isomerism of the type 
(a) structural
(b) geometrical
(c) optical
(d) conformational
Answer: c

Question: The number of water molecule(s) directly bonded to the metal centre in CuSO₄ · 5H₂O is
(a) 1
(b) 2
(c) 3
(d) 4
Answer: d

Question: For the square planar complex [Mabcd]
(where, M = central metal and a, b, c and d are monodentate ligands), the number of possible geometrical isomers are
(a) 1
(b) 2
(c) 3
(d) 4
Answer: c

Question: Which kind of isomerism is exhibited by octahedral Co(NH₃ )₄ Br₂Cl?
(a) Geometrical and ionisation
(b) Geometrical and optical
(c) Optical and ionisation
(d) Geometrical only
Answer: a

Question: The IUPAC name of the given compound [Co(NH₃ )₅ Cl]Cl₂ is 
(a) pentaarninocobaltchloridechlorate
(b) cobaltpentaamminechlorochloride
(c) pentarnmine chloro cobalt (III) chloride
(d) pen ta amino cobalt (III) chlorate
Answer: c

Question: According to IUP AC nomenclature sodium nitroprusside is named as 
(a) sodiumpentacyanonitrosylferrate (II)
(b) sodiumpentacyanonitrosylferrate (III)
(c) sodiumnitroferricyanide
(d) sodiumnitroferrocyanide
Answer: b

Question: Which one amongst the following, exhibit geometrical isomerism ? 
(a) [Co^III (NH₃ )₅ Br]SO₄
(b) Co^III [EDTA]^1-
(c) [CrCo^III (SCN)₆ ]^3-
(d) [Pt^II (NH₃ )₂ Cl₂]
Answer: d

Question: [Fe(NO₂)₃ Cl₃ ] and [Fe(O—NO)₃ Cl₃ ] shows 
(a) linkage isomerism
(b) geometrical isomerism
(c) optical isomerism
(d) None of the above
Answer: a

Question: Among [Fe(H₂O)₆]³⁺, [Fe(CN)₆]^3- , species, the hybridisation state of the Fe atom are, respectively
(a) d² sp³,d² sp³ , sp³d²
(b) sp³d² ,d² sp³ ,d² sp³
(c) sp³d² ,d² sp³ ,sp³d²
(d) None of the above
Answer: c

Question: The anti-cancer drug cis-platin has the formula Pt(NH₃)₂Cl₂ . There is another isomer, trans-platin, that is not medically active. What is the shape of cis-platin ?
(a) Tetrahedral
(b) Octahedral
(c) Square planar
(d) Trigonal bipyramidal
Answer: c

Question: For the given complex [CoCl₂ ( en)(NH₃ )₂]⁺ , the number of geomettical isomers, the number of optical isomers and total number of isomers of all type possible respectively are
(a) 2, 2 and 4
(b) 2, 1 and 3 
(c) 2, 0 and 2
(d) 0, 2 and 2
Answer: b

Question: Which of the following compounds shows optical isomerism?
(a) [Co(CN)₆ J^3-
(b) [Cr(C₂O₄)₃ ]^3-
(c) [ZnCl₄ ]^2-
(d) [Cu(NH₃ )₄ ]²⁺
Answer: b

Question: The IUPAC name of[Co(NH₃ )⁵ONO]²⁺ ion is
(a) pentaamminenitritocobalt (IV) ion 
(b) pentaamminenitrocobalt (II) ion
(c) pentaamminenitritocobalt (III) ion
(d) pentaamminenitrocobalt (V) ion
Answer: c

Question: Which one of the following octahedral complexes will not show geometrical isomerism? (A and Bare monodentate ligands) 
(a) [MA₄B₂ ]
(b) [MA₅B]
(c) [MA₂B₄ ]
(d) [MA₃B₃ ]
Answer: b