NEET UG CHEMISTRY Multiple Choice Questions (MCQs)
NEET UG Inorganic Chemistry - Coordination Compounds
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Werner's theory of coordination compounds is based on which of the following concepts?
- a) The concept of coordinate bonds
- b) The concept of valence bond formation
- c) The idea of ligands and coordination number
- d) The theory of isomerism in coordination compounds
Answer: c) The idea of ligands and coordination number
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The coordination number of a metal ion in a coordination compound is determined by which factor?
- a) The number of bonds formed by the metal
- b) The size of the metal ion
- c) The size and charge of the ligands
- d) Both b and c
Answer: d) Both b and c
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Which of the following ligands is an example of a bidentate ligand?
- a) NH₃
- b) H₂O
- c) EDTA
- d) Cl⁻
Answer: c) EDTA
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The IUPAC name for the complex [Cu(NH₃)₄]SO₄ is:
- a) Tetraammine copper(II) sulfate
- b) Tetraammine copper(I) sulfate
- c) Copper(II) sulfate tetraammine
- d) Copper(II) ammonia sulfate
Answer: a) Tetraammine copper(II) sulfate
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In coordination compounds, isomerism can occur due to:
- a) Geometrical and optical isomerism
- b) Valence bond theory
- c) Both a and b
- d) None of the above
Answer: a) Geometrical and optical isomerism
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According to the valence bond theory, the hybridization of the central metal ion in a square planar complex is:
- a) sp²
- b) sp³
- c) dsp²
- d) d²sp³
Answer: c) dsp²
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Which of the following is an example of a coordination compound showing crystal field splitting?
- a) [Fe(CN)₆]⁴⁻
- b) [CuCl₄]²⁻
- c) [Ni(H₂O)₆]²⁺
- d) [MnO₄]⁻
Answer: a) [Fe(CN)₆]⁴⁻
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Which of the following compounds is known for its strong color due to crystal field splitting?
- a) [Cu(H₂O)₆]²⁺
- b) [NiCl₄]²⁻
- c) [CoCl₄]²⁻
- d) [Fe(CO)₅]
Answer: a) [Cu(H₂O)₆]²⁺
-
Which of the following coordination compounds exhibits paramagnetism?
- a) [Cu(NH₃)₄]²⁺
- b) [Fe(CN)₆]⁴⁻
- c) [CrCl₆]³⁻
- d) [MnO₄]⁻
Answer: c) [CrCl₆]³⁻
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The chelate effect refers to:
- a) The ability of a ligand to form a single bond with the metal ion
- b) The tendency of multidentate ligands to form more stable complexes than monodentate ligands
- c) The formation of coordination compounds with different colors
- d) The splitting of d-orbitals in an octahedral field
Answer: b) The tendency of multidentate ligands to form more stable complexes than monodentate ligands
-
Which of the following is a correct example of a tetrahedral coordination compound?
- a) [CuCl₄]²⁻
- b) [Ni(CO)₄]
- c) [Fe(CO)₅]
- d) [Cu(NH₃)₄]²⁺
Answer: a) [CuCl₄]²⁻
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The oxidation state of the metal in [Cr(CO)₆] is:
- a) +3
- b) +2
- c) +1
- d) 0
Answer: d) 0
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Which of the following is NOT an important application of coordination compounds?
- a) In the extraction of metals
- b) In qualitative analysis
- c) In the synthesis of antibiotics
- d) In biological systems like hemoglobin
Answer: c) In the synthesis of antibiotics
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The number of d-electrons in the metal ion of the complex [Co(NH₃)₆]³⁺ is:
- a) 6
- b) 7
- c) 9
- d) 3
Answer: a) 6
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Which of the following is the correct statement about chelation in coordination compounds?
- a) Chelation decreases the stability of the complex
- b) Chelation increases the solubility of the complex
- c) Chelation is the formation of complexes by monodentate ligands
- d) Chelation increases the stability of the complex
Answer: d) Chelation increases the stability of the complex
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