Transition Elements MCQs Question and Answer in Engineering Chemistry Page-7 section-1

61.
The reaction of [PtCl₄]^2- with NH₃ gives rise to

A. [PtCl₄(NH₃)₂]^2-

B. trans-[PtCl₄(NH₃)₂]

C. [PtCl₂(NH₃)₄]

D. cis-[PtCl₂(NH₃)₂]

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62.
[Co(CO)₄] is isolobal with

A. CH₄

B. CH₃

C. CH₂

D. CH

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63.
Nature has chosen Zn(ll) ion at the active site of many-hydrolytic enzymes because

A. Zn(II) is a poor Lewis acid

B. Zn(ll) does not have chemically accessible redox states

C. Zn(ll) forms both four and higher coordination complexes

D. Zn(ll) forms weak complexes with oxygen donor ligands

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64.
[CoCl(NH₃)₅]²⁺ + [Cr(H₂O)₆]²⁺ → [Co(H₂O)(NH₃)₅]²⁺ + [CrCl(H₂O)₅]²⁺
The correct statement regarding the above reaction is that

A. it follows outer sphere mechanism

B. it follows inner sphere mechanism with NH₃ acting as the bridging ligand

C. it follows inner sphere mechanism with Cl^- acting as the bridging ligand

D. it is not an electron transfer reaction

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65.
In biological systems, the metal ion involved in the di-oxygen transport besides Fe is

A. Co

B. Zn

C. Mg

D. Cu

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66.
The compound which shows L ← M charge transfer is

A. Ni(CO)₄

B. K₂Cr₂O₇

C. HgO

D. [Ni(H₂O)₆]²⁺

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67.
Electron transfer from $$Fe\left( {{H_2}O} \right)_6^{2 + }$$ to $$Fe\left( {{H_2}O} \right)_6^{3 + }$$ is likely to occur via

A. d-d transitions

B. inner sphere electron transfer

C. S_N1 mechanism

D. outer sphere electron transfer

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68.
The set of ions expected to show John-Teller distortion in their complexes is

A. Ti(III), Cu(II), High-spin Fe(III)

B. Cu(I), Ni(II), High-spin Fe(III)

C. Cu(II), Low-spin Fe(III), Ti(II)

D. Low-spin Fe(III), Mn(II), Cu(I)

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Transition Elements MCQs Question and Answer in Engineering Chemistry

61. The reaction of [PtCl4]2- with NH3 gives rise to

Answer & Solution

62. [Co(CO)4] is isolobal with

Answer & Solution

63. Nature has chosen Zn(ll) ion at the active site of many-hydrolytic enzymes because

Answer & Solution

64. [CoCl(NH3)5]2+ + [Cr(H2O)6]2+ → [Co(H2O)(NH3)5]2+ + [CrCl(H2O)5]2+ The correct statement regarding the above reaction is that

Answer & Solution

65. In biological systems, the metal ion involved in the di-oxygen transport besides Fe is

Answer & Solution

66. The compound which shows L ← M charge transfer is

Answer & Solution

67. Electron transfer from $$Fe\left( {{H_2}O} \right)_6^{2 + }$$ to $$Fe\left( {{H_2}O} \right)_6^{3 + }$$ is likely to occur via

Answer & Solution

68. The set of ions expected to show John-Teller distortion in their complexes is

Answer & Solution

61.
The reaction of [PtCl₄]^2- with NH₃ gives rise to

62.
[Co(CO)₄] is isolobal with

63.
Nature has chosen Zn(ll) ion at the active site of many-hydrolytic enzymes because

64.
[CoCl(NH₃)₅]²⁺ + [Cr(H₂O)₆]²⁺ → [Co(H₂O)(NH₃)₅]²⁺ + [CrCl(H₂O)₅]²⁺
The correct statement regarding the above reaction is that

65.
In biological systems, the metal ion involved in the di-oxygen transport besides Fe is

66.
The compound which shows L ← M charge transfer is

67.
Electron transfer from $$Fe\left( {{H_2}O} \right)_6^{2 + }$$ to $$Fe\left( {{H_2}O} \right)_6^{3 + }$$ is likely to occur via

68.
The set of ions expected to show John-Teller distortion in their complexes is