Question detail
Which of the following statements is true about fullerene structures?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Structure and bonding of carbon
Question
- A. They are always linear.
- B. They can include rings with five or seven carbon atoms.
- C. They are made only of hexagonal rings.
- D. They do not contain any carbon atoms.
Answer
The correct option is They can include rings with five or seven carbon atoms.. This answer is correct because it matches the approved learning objective to explain that fullerene structures are based mainly on hexagonal rings and may include rings with five or seven carbon atoms in the subtopic Graphene and fullerenes.
Explanation
The correct option is They can include rings with five or seven carbon atoms.. They can include rings with five or seven carbon atoms. is correct because it directly supports the approved learning objective to explain that fullerene structures are based mainly on hexagonal rings and may include rings with five or seven carbon atoms. This belongs to the subtopic Graphene and fullerenes within Structure and bonding of carbon, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Graphene and fullerenes.
Common mistake
Confusing Fullerene Structure
Students often state that fullerenes are only made of hexagonal rings and do not mention the presence of pentagonal or heptagonal rings.
Emphasize that fullerene structures are primarily based on hexagonal rings but can also include rings with five or seven carbon atoms.
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