Coordination Compounds PYQs Set 2 (PDF)

Set 2 of 18 · Questions 31-60 of 522

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Mere Teacher · Previous Year Questions NEET Chemistry · Coordination Compounds · Set 2 (Q31-60)
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31. $The one that can exhibit highest paramagnetic behaviour among the following is gly = glycinato; bpy = 2, 2^{’} -bipyridine$ (1) $[Fe (en) (bpy) (NH_{3})_{2}]^{2 +}$ (2) $[Pd (g / y)_{2}]$ (3) $[Co (OX)_{2} (OH)_{2}]^{-} (Δ_{0} > P)$ (4) $[Ti (NH_{3})_{6}]^{3 +}$ 32. $Low oxidation state of metals in their complexes are common when ligands:$ (1) $have good π -accepting character$ (2) $have good σ -donor character$ (3) $are havind good π -donating ability$ (4) $are havind poor σ -donating ability$ 33. $Which of the following complex is homoleptic?$ (1) $(Ni (CN)_{4})^{2 -}$ (2) $(Ni (NH_{3})_{2} Cl_{2})$ (3) $(Fe (NH_{3})_{4} Cl_{2})^{+}$ (4) $(Co (NH_{3})_{4} Cl_{2})^{+}$ 34. $Among the following complexes the one which shows Zero crystal field stabilizations energy (CFSE)$ (1) $[Nn(H2O)6]3+$ (2) $[Fe(H2O)6]3+$ (3) $[Co(H2O)6]2+$ (4) $[Co(H2O)6]3+$ 35. $The coordination number and the oxidation state of the element 'E' in the complex [E (e n)_{2} (C_{2} O_{4})] N O_{2} (when 'en' is ethylene diamine) are, respectively,$ (1) $4 and 2$ (2) $4 and 3$ (3) $6 and 3$ (4) $6 and 2$ 36. $The IUPAC name of the complex: (Ag (H_{2} O)_{2}) (Ag (CN)_{2}) is$ (1) $Diaquasilver(I) dicyanidoargentate(I)$ (2) $Dicyanidosilver(II) diaquaargentate(II)$ (3) $Diaquasilver(II) dicyanidoargentate(II)$ (4) $Dicyanidosilver(I) diaquaargentate(I)$ 37. $Among the following species the one which causes the highest CFSE, Δ_{0} as a ligand is :$ (1) $C N^{-}$ (2) $N H_{3}$ (3) $F^{-}$ (4) $CO$ 38. $Indicate the complex/complex ion which did not show any geometrical isomerism$ (1) $[C o C l_{2} (e n)_{2}]$ (2) $[Co(CN)_{5} (NC)]^{3 -}$ (3) $[Co (N H_{3})_{3} (N O_{2})_{3}]$ (4) $[C o (N H_{3})_{4} C l_{2}]^{+}$ 39. $The correct sequence of ligands in the order of decreasing field strength is :$ (1) $NCS^{-} > EDTA^{4 -} > CN^{-} > CO$ (2) $CO > H_{2} O > F^{-} > S^{2 -}$ (3) $S^{2 -} > - OH > EDTA^{4 -} > CO$ (4) $^{-} OH > F^{-} > NH_{3} > CN^{-}$ 40. $The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively: (Fe (CN)_{6})^{3 -}, (FeF_{6})^{3 -}, (CoF_{6})^{3 -}, (Mn (CN)_{6})^{3 -}$ (1) $1, 5, 4, 2$ (2) $1, 4, 4, 2$ (3) $1, 5, 5, 2$ (4) $1, 1, 4, 2$ 41. $The pair in which both the species have same magnetic moment (spin only) is$ (1) $(CoCl_{4})^{2 -}, (Fe (H_{2} O)_{6})^{2 -}$ (2) $(Mn (H_{2} O)_{6})^{2 +}, (Cr (H_{2} O)_{6})^{2 +}$ (3) $(Cr (H_{2} O)_{6})^{2 +}, (Fe (H_{2} O)_{6})^{2 +}$ (4) $(Cr (H_{2} O)_{6})^{2 +}, (CoCl_{4})^{2 -}$ 42. $The hybridization of metals involved in the following complexes, respectively are (Mn (CN)_{6})^{3 -}, (CoF_{6})^{3 -}$ (1) $sp^{3} d^{2}, sp^{3} d^{2}$ (2) $sp^{3} d^{2}, d^{2} sp^{3}$ (3) $d^{2} sp^{3}, d^{2} sp^{3}$ (4) $d^{2} sp^{3}, sp^{3} d^{2}$ 43. $The complex that shows Facial - Meridional isomerism is:$ (1) $_{1.} (Co (en)_{2} Cl_{2})^{+}$ (2) $(Co (en)_{3})^{3 +}$ (3) $(Co (NH_{3})_{3} Cl_{3})$ (4) $(Co (NH_{3})_{4} Cl_{2})^{+}$ 44. $Which among the following is a neutral complex?$ (1) $(Fe (H_{2} O)_{6}) Cl_{3}$ (2) $(Ni (NH_{3})_{6}) Cl_{2}$ (3) $(Pt (NH_{3})_{2} Cl_{2})$ (4) $K (Ag (CN)_{2})$ 45. $Among the following metal carbonyls, the C-O bond order is lowest in :$ (1) $[Mn(CO)_{6}]^{+}$ (2) $[V (C O)_{6}]¯$ (3) $[Cr (C O)_{6})]$ (4) $[Fe (C O)_{5}]$ 46. $The correct order of the calculated spin-only magnetic moments of complexes (A) to (D) is(A) Ni (CO)_{4} (B) [Ni (H_{2} O)_{6}] C l_{2} (C) N a_{2} [Ni (CN)_{4}] (D) PdC l_{2} (PP h_{3})_{2}$ (1) $A = C = D < B$ (2) $A < B < C < D$ (3) $A > B > C > D$ (4) $A = B > C > D$ 47. $Which of the following complexes formed by nickel is tetrahedral and paramagnetic?$ (1) $(Ni (CN)_{4})^{2 -}$ (2) $(Ni (CO)_{4})$ (3) $(Ni (Cl)_{4})^{2 -}$ (4) $(Ni (NH_{3})_{6})^{2 +}$ 48. $The correct order of field strength of the following ligands is$ (1) $N^{3 -} > C_{2} O_{4}^{2 -} > NH_{3} > CO$ (2) $N^{3 -} > NH_{3} > C_{2} O_{4}^{2 -} > CO$ (3) $CO > NH_{3} > C_{2} O_{4}^{2 -} > N^{3 -}$ (4) $CO > N^{3 -} > NH_{3} > C_{2} O_{4}^{2 -}$ 49. $The IUPAC name of the compound (NH_{4})_{2} (Ni (C_{2} O_{4})_{2} (H_{2} O)_{2}) is$ (1) $Nickel (II) diammino dioxalato diaquate$ (2) $Dioxalatodiammino diaquo nickelate (III)$ (3) $Ammonium diaquabis (oxalato) nickelate (II)$ (4) $Ni dioxalato diaqua (II) amminate$ 50. $From the magnetic behaviour of (NiCl_{4})^{2 -} (paramagnetic) and (Ni (CO)_{4}) (diamagnetic), choose the correct geometry and oxidation state.$ (1) $(NiCl_{4})^{2 -} : Ni^{II}, tetrahedral (Ni (CO)_{4}) : Ni^{II}, square planar$ (2) $(NiCl_{4})^{2 -} : Ni^{II}, square planar (Ni (CO)_{4}) : Ni (0), square planar$ (3) $(NiCl_{4})^{2 -} : Ni^{II}, tetrahedral (Ni (CO)_{4}) : Ni (0), tetrahedral$ (4) $(NiCl_{4})^{2 -} : Ni (0), tetrahedral (Ni (CO)_{4}) : Ni (0), square planar$ 51. $Co-ordination compounds have great importance in biological systems. In this context, which statement is incorrect ?$ (1) $Carboxypeptidase-A is an enzyme and contains zinc.$ (2) $Haemoglobin is the red pigment of blood and contains iron.$ (3) $Cyanocobalmin is B_{12} and contains cobalt.$ (4) $Chlorophylls are green pigments in plants and contain calcium.$ 52. $Which one of the following complex has the highest magnitude of crystal ficld splitting energy (Δ_{0}) ?$ (1) $(Co (H_{2} O)_{6})^{3 +}$ (2) $(Co (NH_{3})_{6})^{3 +}$ (3) $(Co (C_{2} O_{4})_{3})^{3 -}$ (4) $(CoF_{6})^{3 -}$ 53. $The conditions and consequence that favours the t_{2 gg} e_{g}^{1} configuration in a metal complex are$ (1) $weak field ligand, low spin complex$ (2) $weak field ligand, high spin complex$ (3) $strong field ligand, high spin complex$ (4) $strong field ligand, low spin complex$ 54. $The total number of isomers for a square planar complex (M (F) (Cl) (SCN) (NO_{2})) is$ (1) $16$ (2) $8$ (3) $4$ (4) $12$ 55. $The Δ_{0} of a coordination complex of a metal ion (3 d^{1}) is 1000 kJ mol^{- 1} . If the energy of t_{2 g} orbitals is - 400 kJ mol^{- 1}, the energy (in kJ mol^{- 1}) of e_{g} orbitals is$ (1) $-600$ (2) $600$ (3) $1000$ (4) $400$ 56. $Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?$ (1) $SCN^{-} < F^{-} < CN^{-} < C_{2} O_{4}^{2 -}$ (2) $F^{-} < SCN^{-} < C_{2} O_{4}^{2 -} < CN^{-}$ (3) $CN^{-} < C_{2} O_{4}^{2 -} < SCN^{-} < F^{-}$ (4) $SCN^{-} < F^{-} < C_{2} O_{4}^{2 -} < CN^{-}$ 57. $Which of the following complexes exhibits the highest paramagnetic behaviour? where, gly = glycine, en = ethylenediamine and bpy = bipyridyne ) (At no Ti = 22, V = 23, Fe = 26, Co = 27)$ (1) $[V(gly)2(OH)2(NH3)2]+$ (2) $[Fe(en)(bpy)(NH3)2]2+$ (3) $[Co(OX)2(OH)2]-$ (4) $[Ti(NH3)6]3+$ 58. $When AgNO3 is added to a solution of Co(NH3)5Cl3, the precipitate of AgCl shows two ionizable chloride ions. This means :$ (1) $Two chlorine atoms satisfy primary valency and one secondary valency$ (2) $One chlorine atom satisfies primary as well as secondary valency$ (3) $Three chlorine atoms satisfy secondary valency$ (4) $Three chlorine atoms satisfy primary valency$ 59. $Which of following coordinate complexes is an exception to EAN rule? (Given At. No. Pt = 78, Fe = 26, Zn = 30, Cu = 29)$ (1) $(Pt (NH_{3})_{6})^{4 +}$ (2) $(Zn (NH_{3})_{4})^{2 +}$ (3) $(Fe (CN)_{6})^{4 -}$ (4) $(Cu (NH_{3})_{4})^{2 +}$ 60. $The existance of two different coloured complexes with the composition of [Co(NH3)4Cl2]+ is due to$ (1) $linkage isomerism$ (2) $geometrical isomerism$ (3) $coordination isomerism$ (4) $ionization isomerism$