1010023464 Nanotechnology

What is the main characteristic that differentiates nanomaterials from bulk materials?

• Color

• Size

• Weight

• Electrical conductivity

Which property of nanomaterials can be significantly different from their bulk counterparts?

• Melting point

• Density

• Magnetic properties

• All of the above

Nanotechnology involves the manipulation of matter on which scale?

• Micrometer

• Millimeter

• Nanometer

• Centimeter

Which of the following is NOT a shape of nanomaterials?

• Spheres

• Rods

• Cubes

• Blocks

Why do nanomaterials exhibit different properties compared to their bulk counterparts?

• Larger surface area to volume ratio

• Smaller surface area to volume ratio

• Higher density

• Lower density

Which of the following is a common application of nanotechnology?

• Food packaging

• Construction

• Water purification

• Textile manufacturing

Which of the following is a top-down approach for fabricating nanomaterials?

• Sol-gel method

• Chemical vapor deposition

• Grinding

• Colloidal synthesis

In the context of nanomaterials, what does "planetary milling" refer to?

• A method to synthesize nanomaterials by chemical reaction

• A physical method to break down bulk materials into nanoscale particles

• A biological method to grow nanomaterials

• A thermal method to fuse nanoparticles

Which approach involves building up materials from atoms or molecules?

• Top-down

• Side-by-side

• Bottom-up

• Inside-out

What is the primary advantage of using the bottom-up approach for nanomaterial fabrication?

• Lower cost

• Greater control over particle size and shape

• Faster production

• Simplicity