Top 150+ Solved Fundamentals of NanoScience MCQ Questions Answer
Q. uses flame hydrolysis stems from work on soot processes which were used to prepare the fiber with losses below 20 dB/km.
a. outside vapor phase oxidation
b. chemical vapor deposition
c. liquid phase melting
d. crystallization
Q. In modified chemical vapor deposition, vapor phase reactant such as pass through a hot zone.
a. halide and oxygen
b. halide and hydrogen
c. halide and silica
d. hydroxides and oxygen
Q. is the stimulation of oxide formation by means of non-isothermal plasma maintained at low pressure in a microwave cavity surrounding the tube.
a. outside vapor phase oxidation (ovpo)
b. vapor axial deposition (vad)
c. modified chemical vapor deposition (mcvd)
d. plasma-activated chemical vapor deposition (pcvd)
Q. An ancient process used till today for production of circuit films is,
a. silk screening technique
b. surface mount technology
c. ceramic printing technique
d. screen printing technique
Q. What is the advantage of using Surface Mount Technology?
a. all of the mentioned
b. low power consumption
c. reduces heat dissipation in components
d. use leaded or leadless components
Q. Which of the following is an example of top- down approach for the preparation of nanomaterials?
a. gas phase agglomeration
b. molecular self-assembly
c. mechanical grinding
d. molecular beam epitaxy
Q. Which of the following is an example of bottom-up approach for the preparation of nanomaterials?
a. etching
b. dip pen nano-lithography
c. lithography
d. erosion
Q. The properties like melting point, solubility, color, etc changes on varying the
a. size
b. composition
c. surface properties
d. none of the mentioned
Q. The properties like dispersibility, conductivity, etc changes on varying the
a. size
b. composition
c. surface properties
d. none of the mentioned
Q. Quantum confinement results in
a. energy gap in semiconductor is proportional to the inverse of the square root of the size
b. energy gap in semiconductor is proportional to the inverse of the size
c. energy gap in semiconductor is proportional to the square of size
d. energy gap in semiconductor is proportional to the inverse of the square of size
Q. Which of the following is the principal factor which causes the properties of nanomaterials to differ significantly from other materials?
a. size distribution
b. specific surface feature
c. quantum size effects
d. all of the mentioned
Q. Select the incorrect statement from the following options.
a. self-assembly is a top-down manufacturing technique
b. in self-assembly, weak interactions play very important role
c. self-assembling molecules adopt an organised structure which is thermodynamically more stable than the single, unassembled components
d. compared to the isolated components, the self-assembled structure has a higher order
Q. Which of the following is the application of nanotechnology to food science and technology?
a. agriculture
b. food safety and biosecurity
c. product development
d. all of the mentioned
Q. What are the advantages of nano-composite packages?
a. lighter and biodegradable
b. enhanced thermal stability, conductivity and mechanical strength
c. gas barrier properties
d. all of the mentioned