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Questions and Answers
Which of the following allotropes of carbon is the hardest material known?
Which of the following allotropes of carbon is the hardest material known?
- Fullerene
- Carbon nanotube
- Graphene
- Diamond (correct)
Which of the following allotropes of carbon is used as a lubricant?
Which of the following allotropes of carbon is used as a lubricant?
- Fullerene (correct)
- Carbon nanotube
- Diamond
- Graphene
Which of the following allotropes of carbon is commonly used in pencils?
Which of the following allotropes of carbon is commonly used in pencils?
- Graphite (correct)
- Diamond
- Fullerene
- Graphene
