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Polyhedral Boranes as Superacids
  • 1. What are polyhedral boranes?
A) Ionic compounds of boron
B) Chain compounds of boron
C) Metallic compounds of boron
D) Cluster compounds of boron and hydrogen
  • 2. What role do polyhedral boranes play in organic synthesis?
A) They are only used as solvents
B) They can be used as catalysts or reagents
C) They act as radical initiators
D) They are inert in organic reactions
  • 3. What is the most widely studied class of polyhedral boranes?
A) Iodoboranes
B) Fluoroboranes
C) Carboranes
D) Boronates
  • 4. Which property contributes to the thermal stability of polyhedral boranes?
A) Presence of double bonds
B) The cage-like structure
C) Lone pair availability on boron atoms
D) High reactivity with water
  • 5. Which element is typically found at the center of most polyhedral boranes?
A) Sulfur
B) Nitrogen
C) Carbon
D) Boron
  • 6. What is the origin of the term 'carborane'?
A) Carboxylic acid and boron
B) Carbide and boron
C) Carbon and boron
D) Carbohydrate and boron
  • 7. Which Nobel Prize-winning scientist contributed significantly to the study of boranes?
A) Albert Einstein
B) Marie Curie
C) Nikola Tesla
D) Herbert C. Brown
  • 8. What role do fluorinated polyhedral boranes play in MRI contrast agents?
A) They cause interference in MRI imaging
B) They enhance contrast in MRI imaging
C) They have no effect on MRI imaging
D) They reduce contrast in MRI imaging
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