Question

Q79) Which of the following statements are true with respect to carbon nanotubes?

1.They are extremely light weight.

2. They have high temperature tolerance and low thermal expansion.

3. They are increasingly being used in electrical equipment.

• A. a) Only 1.
• B. b) Only 1 and 2.
• C. c) Only 1 and 3
• D. d) All of the above

Answer 1

The correct option is D d) All of the above

Answer 79: D

Explanation: Carbon nanotubes (CNTs) are an allotrope of carbon- they are cylindrical hollow fibers. Being a hollow tube comprised
entirely of carbon, they are also extremely light weight.
CNT composites have excellent electrical properties and are used as reinforcement to metals in order to enhance their electrical
properties