engineering recuitment BHEL Engineer Trainee Mock Test 2025 Engineering Materials Science Structure and Properties of Engineering Materials Classification of Materials
Consider the following statements regarding carbon Nanotubes (CNTs):
1. CNTs are described as a sheet of graphite rolled into a cylindrical form, constructed from hexagonal rings of carbon.
2. CNTs have one or multiple layers.
3. Choice of the rolling axis relative to the hexagonal network of graphite sheet, gives three different structures, namely: Armchair, Zig Zag, and chiral.
Which of the above statements are correct?
1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3