Question

Consider the following statements:

1. Nano means 10^-9 so that nano materials have an order of dimension higher than the size of atom and come in the form of rods, tubes, spheres or even thin sheets/films.

2. Nano materials have enhanced or changed structural property.

3. Nano elements lend themselves to mechanical processing like rolling, twisting, positioning.

4. Nano elements show important electrical, magnetic and optical characteristics that are useful in electrical industry.

Which of the above statements are correct?
1. 1, 2 and 8 only
2. 1, 2, 3 and 4
3. 3 and 4 only
4. 1, 2 and 4 only

Answer 1

Correct Answer - Option 2 : 1, 2, 3 and 4

• The atomic radius is the order of 10^-10 to 10^-14 m whereas nano means 10^-9m whose order of dimension is higher and nano materials do exist in the form of rods, tabes, spheres etc.
• Nano elements under goes nano technology in which manipulation of materials are done to enhanced or changed structural property and processed at the nanoscale level. Such as carbon nanotubes etc.
• Moreover, nano elements exhibit prominent electrical, magnetic, optical characteristics and these materials can be processed through rolling, twisting, positioning.