Nanoparticles
Trending Questions
Q.
Identify the oxidising and reducing agents in the reaction:
Zn + CuSO4 → Cu + ZnSO4
Oxidising agent: CuSO4 ; Reducing agent: Zn
Oxidising agent: Cu ; Reducing agent: ZnSO4
Oxidising agent: ZnSO4; Reducing agent: CuSO4
Oxidising agent: Zn ; Reducing agent: Cu
Q.
The density of metal which crystallises in bcc lattice with unit cell edge length 300 pm and molar mass 50 g mol-1 will be
6.15 g cm-3
9.31 g cm-3
10.0 g cm-3
14.2 g cm-3
Q.
What is used to make computer chips?
Q. A gas that is oxidizing as well as reducing agent
Q. What is isotropic and anisotropic
Q.
Examples for oxidant agent and reducing agent happens in chemical reaction .
Q. Which of these is an amorphous solid?
(A)glass
(B)rubber
(C)plastic
(D)all
(A)glass
(B)rubber
(C)plastic
(D)all
Q. Which of the following nano materials are examples of two dimensional nano materials?
- nanocoatings.
- nanofilms, nanolayers
- graphene,
- A, B, C
Q. The charcoal particles present in the given suspension are ____________ in water.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1628773/original_Picture9.png)
(A) soluble
(B) insoluble
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1628773/original_Picture9.png)
(A) soluble
(B) insoluble
Q. The energy associated with each orbit as we move away from the nucleus.
- decreases
- remains the same
- increases
Q. If molecularity is two then why it is called Psuedo unimolecular reaction
Q. Which of the following lists the disadvantages of nanomaterials?
- Nanomaterials are also pretty difficult to manufacture.
- Nanoparticles are very small, inhalation of these particles can cause problems.
- Nanomaterials are very expensive.
- All of the above.
Q. The nanomaterials are classified into which of the following?
- Nanolayers
- Nanotubes or nanowires
- Nanoparticles
- All of the above
Q. In which of the following type of nano material all the dimensions are measured within the nano scale?
- Two dimensional naomaterial
- Zero dimensional naomaterial
- one dimensional naomaterial
- Three dimensional naomaterial
Q. Which of the following nano materials are examples of zero dimensional nano materials?
- Diamond
- Fullarene
- Nano particles
- Graphite
Q. Carbon nano tubes are made up of:
- carbon nano particle
- carbon atoms
- none of the above
- compounds containing carbon atoms
Q. Nanoclusters have at least one dimension between .................. nanometers and a narrow size distribution.
- 1 and 1000 nanometer
- 1 and 100 nanometer
- 1 and 10 nanometer
- 0 and 1 nanometer
Q. Which of the following are characteristic properties of nano particles?
- More surface area
- Quantum effects
- Both a and b
- None of the above
Q.
Write True or False for the following statement:
Nanotubes are formed by fullerenes allotrope of carbon.
- True
- False
Q. The continous part of X-ray spectrum is result of
A) photoelectric effect
B) Raman effect
C) Compton effect
D) inverse photoelectric effect
Q. Electron gain enthalpy depends on atomic size.
- False
- True
Q. Coose the correct statements.
P: Nanoparticles are unstable when they react with oxygen.
Q: Nanotechnology is applied in the production of synthetic skin and implant surgery.
R: Nano particles are non-reactive in nature.
P: Nanoparticles are unstable when they react with oxygen.
Q: Nanotechnology is applied in the production of synthetic skin and implant surgery.
R: Nano particles are non-reactive in nature.
- P and Q are correct.
- Only P is correct.
- R is correct.
- All of these are correct.
Q. A dispersed phase particle in a zig-zag movement is shown. What kind of motion is exhibited by the particle?
![517558.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/517558.jpg)
![517558.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/517558.jpg)
- Circular motion
- Transitional motion
- Linear motion
- Brownian motion
Q. ____________ nanotubes are used as strengthening rods and toughening elements in structural composite materials.
- Gold
- Carbon
- Silver
- Metal oxide