Nanoscale Surface to Volume Ratio Quiz

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Questions and Answers

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?

<p>2-D nanocrystal (C)</p> Signup and view all the answers

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

<p>Electronic industry (A)</p> Signup and view all the answers

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

<p>Drug delivery system (A)</p> Signup and view all the answers

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

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

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

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

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

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

How does electron confinement in nanomaterials affect their behavior?

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

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

<p>Due to electron confinement leading to discrete energy states. (B)</p> 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?

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

What is a characteristic of 0D nanomaterials?

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

What does the 'Density of States' refer to?

<p>Total number of energy states available (B)</p> Signup and view all the answers

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

<p>Increase in total volume and surface area (D)</p> Signup and view all the answers

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

<p>Thermal conductivity (C)</p> Signup and view all the answers

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

<p>Melting point decreases (B)</p> Signup and view all the answers

Which statement best describes the electrical properties of nanomaterials?

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

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