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Nanotechnology Fundamentals

Introduction to core concepts of nanotechnology including nanoparticles, self-assembly, nanocrystals, fullerenes, nanotubes, and practical applications in science and medicine.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements about nanoparticles is correct?

  1. They have a larger surface area as compared to their volume.
  2. They cannot be used as catalysts.
  3. They are always 'inorganic' compounds such as titanium dioxide.
  4. None of these
Question 2 Multiple Choice (Single Answer)

Which of the following approaches of preparing nano-structured materials make(s) use of techniques of colloidal chemistry to pattern materials?

  1. Top-down approach
  2. Bottom-up approach
  3. Both (1) and (2)
  4. Neither (1) nor (2)
Question 3 Multiple Choice (Single Answer)

In which type of self assembly is the free energy of the system reduced?

  1. Static
  2. Dynamic
  3. Sub-static
  4. Neither in static nor in dynamic
Question 4 Multiple Choice (Single Answer)

Which of the following approaches is/are used for the manufacturing of nano-structured molecules?

  1. Top-down approach
  2. Bottom-up approach
  3. Self assembly
  4. All of the above
Question 5 Multiple Choice (Single Answer)

Which of the following nanocrystals can be prepared by recrystallisation of pie conjugated compounds in H2O?

  1. Metal nanocrystals
  2. Condensed ring type nanocrystals
  3. Polydiacetylene type nanocrystals
  4. Natural nanocrystals
Question 6 Multiple Choice (Single Answer)

Surface to volume ratio of a spherical nanocrystal _________ with _________ in diameter.

  1. decreases, increase
  2. increases, decrease
  3. increases, increase
  4. decreases, decrease
Question 7 Multiple Choice (Single Answer)

_______ could be very long, thin fullerenes with unusual electrical properties.

  1. Graphite
  2. Buckminsterfullerene
  3. Nanotubes
  4. All of the above
Question 8 Multiple Choice (Single Answer)

Cage-like carbon compounds are called

  1. fullerenes
  2. micelles
  3. colloids
  4. None <font size="2">of these</font>
Question 9 Multiple Choice (Single Answer)

Which of the following is incorrect about Buckminsterfullerene?

  1. It is made from carbon atoms.
  2. Its molecule has 60 atoms.
  3. It is used to reinforce graphite in tennis rackets.
  4. None of these
Question 10 Multiple Choice (Single Answer)

Which of the following is/are not a biological nanomaterial?

  1. Nucleic acid
  2. Lipid
  3. Hormones
  4. Fullerene
Question 11 Multiple Choice (Single Answer)

Nanotechnology includes anything smaller than

  1. 1 nm
  2. 10 nm
  3. 100 nm
  4. 1000 nm
Question 12 Multiple Choice (Single Answer)

Which of the following is/are not the area(s) of nanoscience?

  1. Nanocomposite
  2. Nanofabrication
  3. Nanotubes
  1. Only (1)
  2. Only (1) and (2)
  3. All (1), (2) and (3)
  4. None of these
Question 13 Multiple Choice (Single Answer)

Consider the following statements:

  1. Nanotechnology is also called atomic engineering.
  2. Nanotechnology is useful in destroying tumors of cancer.

Which of the given statements is/are correct?

  1. Only (1)
  2. Only (2)
  3. Both (1) and (2)
  4. Neither (1) nor (2)
Question 14 Multiple Choice (Single Answer)

Nanotechnology is used for

  1. storing hydrogen for fuel cell powered cars
  2. reducing power loss in electric transmission wires
  3. improving the performance of batteries
  4. All of these
Question 15 Multiple Choice (Single Answer)

Consider the following statements:

(i) The diameter of human hair is in nano range.
(ii) The heating of nanopores (tiny biomolecular chambers) may help doctors diagnose diseases.

Which of the given statements is/are correct?

  1. Only (i)
  2. Only (ii)
  3. Both (i) and (ii)
  4. Neither (i) nor (ii)
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