Nanoscale Surface to Volume Ratio Quiz

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What is the primary reason for the enhancement in mechanical strength of nanomaterials?

Reduced probability of defects (correct)
Higher temperature resistance
Lower atomic density
Increased defect probability

Which material is mentioned to be 100 times stronger than steel but six times lighter?

Aluminum
Iron
Copper
Carbon nanotubes (correct)

In which industry would you find applications like lightweight construction and coatings for car bodies?

Electronic industry
Chemical industry
Automobile industry (correct)
Food and drinks industry

What type of nanocrystal is referred to as a quantum well?

2-D nanocrystal (C) Signup and view all the answers

Which industry would utilize nanomaterials for applications like data memory and displays?

Electronic industry (A) Signup and view all the answers

What is the main application of nanomaterials in the medicine industry according to the text?

Drug delivery system (A) Signup and view all the answers

What is one of the effects of reducing the scale in nanomaterials on their electrical properties?

Electron delocalisation is replaced by electron confinement. (C) Signup and view all the answers

How does the increase in surface to volume ratio at nanoscale affect the reactivity of nanomaterials?

Atoms or molecules on the surface possess high surface energy and reactivity. (A) Signup and view all the answers

What happens to the melting point of nanomaterials compared to their bulk counterparts?

The melting point is reduced due to larger surface atoms. (A) Signup and view all the answers

How does electron confinement in nanomaterials affect their behavior?

It replaces energy bands with discrete energy states. (C) Signup and view all the answers

Why do nanomaterials show different behavior in terms of conductivity compared to bulk materials?

Due to electron confinement leading to discrete energy states. (B) Signup and view all the answers

What is a significant property of nanomaterials that makes them differ from bulk materials with regard to catalysis reactions?

Presence of a higher proportion of atoms on the surface. (A) Signup and view all the answers

What is a characteristic of 0D nanomaterials?

All dimensions at nanoscale, no dimension at macro scale (A) Signup and view all the answers

What does the 'Density of States' refer to?

Total number of energy states available (B) Signup and view all the answers

How do nanomaterials affect surface properties when compared to bulk materials?

Increase in total volume and surface area (D) Signup and view all the answers

Which property of nanomaterials is NOT mentioned as unique compared to bulky materials?

Thermal conductivity (C) Signup and view all the answers

What happens to the melting point of nanomaterials in comparison to bulky materials?

Melting point decreases (B) Signup and view all the answers

Which statement best describes the electrical properties of nanomaterials?

Nanomaterials show efficient electrical properties compared to bulky materials (A) Signup and view all the answers