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