Tag: nanochemistry

Questions Related to nanochemistry

Which of the following are the nanomaterials with only one dimension between 1 nm and 100 nm?

nanochemistry nanotechnology applied chemistry materials chemistry

  1. Nanolayers

  2. Nanotubes

  3. Nanowires

  4. Nanoparticles

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Correct Option: A
Explanation:

Nanolayers are the nanomaterials with only one dimension between 1 nm and 100 nm. Nanotubes or nanowires are the nanomaterials with two dimension between 1 nm and 100 nm. Nanoparticles are the nanomaterials with three dimension between 1 nm and 100 nm.

In which of the following type of nano material three dimensions are  outside the nano scale technology deals with using?

nanochemistry nanotechnology applied chemistry materials chemistry

  1. One dimensional nano material

  2. Zero dimensional nano material

  3. Two dimensional nano material

  4. Three dimensional nano material

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Correct Option: D
Explanation:

Three-dimensional nanomaterials (3D) are materials that are not confined to the nanoscale in any dimension. This class can contain bulk powders, dispersions of nanoparticles,bundles of nanowires, and nanotubes as well as multi-nanolayers.
Hence option D is correct.

Which of the following are characteristic properties of nano particles?

nanochemistry nanotechnology applied chemistry materials chemistry

  1. More surface area

  2. Quantum effects

  3. Both a and b

  4. None of the above

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Correct Option: C
Explanation:

Two principal factors cause the properties of nanomaterials to differ significantly from other materials: increased relative surface area, and quantum effects. These factors can change or enhance properties such as
reactivity, strength and electrical characteristics.
Hence option C is correct.