Which of the following statements about carbon nanotubes is true?Question 2Answera.They are primarily used in bulk manufacturing of composites. b.They have poor electrical conductivity. c.The structure resembles to graphene sheets rolled into a cylindrical shape.d.They are not suitable for biomedical applications. e.They are two-dimensional materials.
Question
Which of the following statements about carbon nanotubes is true?Question 2Answera.They are primarily used in bulk manufacturing of composites. b.They have poor electrical conductivity. c.The structure resembles to graphene sheets rolled into a cylindrical shape.d.They are not suitable for biomedical applications. e.They are two-dimensional materials.
Solution
The correct statement about carbon nanotubes is: "The structure resembles to graphene sheets rolled into a cylindrical shape."
Here's why:
a. While carbon nanotubes are used in the manufacturing of composites, it's not their primary use. They're also used in electronics, optics, and other fields.
b. Carbon nanotubes actually have excellent electrical conductivity, not poor.
c. This statement is true. Carbon nanotubes are essentially graphene sheets (a single layer of carbon atoms arranged in a hexagonal lattice) rolled into a cylindrical shape.
d. Carbon nanotubes are actually being explored for various biomedical applications, including drug delivery and tissue engineering.
e. Carbon nanotubes are not two-dimensional materials. They are one-dimensional nanostructures with a length-to-diameter ratio of up to 132,000,000:1, which is significantly larger than for any other material.
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