Here are 1000 MCQs on Nanotechnology (Chapterwise).
1. Which of the following is a potential environmental application of nanotechnology?
a) Carbon emissions
b) Oil spill cleanup
c) Deforestation
d) Plastic production
View Answer
Explanation: Nanotechnology offers the potential for improved methods in cleaning up oil spills by using nanomaterials with high adsorption capabilities to remove oil from water more efficiently.
2. Which technique is commonly used for the fabrication of nanoparticles?
a) Sedimentation
b) Filtration
c) Distillation
d) Lithography
View Answer
Explanation: Lithography is a widely used technique for the precise and controlled fabrication of nanoparticles. It involves the use of masks and etching processes to create patterns on substrates at the nanoscale.
3. What is the typical size range of nanoparticles?
a) 1 to 100 millimeters
b) 1 to 100 micrometers
c) 1 to 100 nanometers
d) 1 to 100 picometers
View Answer
Explanation: Nanoparticles typically fall within the range of 1 to 100 nanometers in at least one dimension. This small size gives them unique properties and applications in various fields.
4. Which of the following is not used as a tool for Nanotribology studies?
a) Compound Microscope
b) AFM (Atomic Force Microscope)
c) STM (Scanning Tunneling Microscope)
d) SPM (Scanning Probe Microscope)
View Answer
Explanation: Compound microscope provides a magnification 1000 times but has very less resolution. Nanotribology studies require high resolution measurements which can be provided by STM, AFM and SPM microscopes.
5. Which of the following is not considered as a subfield of computational nanotechnology?
a) Electrochemistry
b) Nanoinformatics
c) Nano-device simulation
d) Molecular modeling
View Answer
Explanation: Computational nanotechnology can be considered to have few subfields like Nanoinformatics, molecular modeling, nano simulation, High-fidelity computation and nanotechnology inspired computing.
6. Which of the following is not an advantage of nanowires?
a) High electron mobility
b) Shorter response time
c) Greater dielectric constant
d) Asymmetric electron-hole characteristic
View Answer
Explanation: Nanowires have high electron mobility, high dielectric constant, and a symmetrical electron-hole characteristic. Their extremely high surface to volume ratio of thin 1D nanostructure has enabled them to function well with high sensitivity and short response time. They even allow several transistors to be packed into a single chip leading to a more uniform and compact structures.
7. Which of the given options is incorrect about Nanoinformatics?
a) It is used in the development and comparative characterization of nanomaterials
b) It improves environmental health
c) It is limited to collecting and sharing of data about nanotechnologies
d) It applies techniques of data mining machine learning, product designing, logistics and optimization
View Answer
Explanation: Nanoinformatics is a vast branch of computational nanotechnology, which generates stores and distributes large amount of data. It is not limited to collecting and sharing of information. It is a multidisciplinary field that has found its applications in industries, environmental health, scientific discovery, manufacturing and etc.
8. What is the major drawback of the advanced numerical techniques in nanofluidics?
a) High computational cost
b) Time consuming
c) Poor understanding of atomistic behavior in confined nanoscale transport
d) Very low accuracy and precision
View Answer
Explanation: The advent of advanced numerical techniques in the field of nanofluidics has led to the solution of many critical questions regarding the atomistic behavior governing the nanoscale transports. Moreover, the high accuracy rates and ability to produce quick results have favored their applications in research and development. But one of the major downside to this technique is the huge computational cost which often limits its usage.
9. What is the term used to describe the self-assembly of nanoparticles into ordered structures?
a) Nanomorphosis
b) Nanoassembly
c) Nanosynthesis
d) Nanoscale patterning
View Answer
Explanation: Nanoassembly refers to the spontaneous arrangement of nanoparticles into organized structures due to their inherent properties and interactions, without external intervention.
10. Why is the conductivity of a nanowire much less than that of the corresponding bulk material?
a) Due to precise control of the heating mechanism
b) Due to greater mean free path
c) Due to scattering from wire boundaries
d) Due to the response of nanowires to an applied load
View Answer
Explanation: The conductivity of a nanowire is much less than that of the corresponding bulk material due to the scattering from the wire boundaries. This has a very significant effect upon reducing the wire width below the free electron mean free path of the bulk material. The decrease in conductivity is also attributed to the quantization in energy in nanowires.
11. Which of the following is NOT a characteristic of nanomaterials?
a) High surface area to volume ratio
b) Reduced reactivity due to larger particle size
c) Increased strength and hardness compared to bulk materials
d) Unique optical, electrical, and magnetic properties
View Answer
Explanation: Nanomaterials exhibit increased reactivity owing to their high surface area to volume ratio, allowing them to interact more readily with other substances. Their properties can differ significantly from bulk materials due to their nanoscale dimensions.
12. Which of the following is not a requirement for an ideal semiconductor nanostructure?
a) Density
b) Uniformity
c) Confinement potential
d) Low melting point
View Answer
Explanation: An ideal semiconductor nanostructure should have uniform shape, size, and composition. Dense nanostructures have many applications. Potential wells confining electrons and holes should be sufficiently deep to prevent the thermal excitation of these carriers out of the nanostructures.
13. Why are problems of friction and wear more critical in case of nanodevices?
a) Good conductor of electricity
b) High surface to volume ratio
c) Lubrication is impossible
d) Surface topology
View Answer
Explanation: Micro and nano-devices have high surface to volume ratio that makes the problems of friction and wear more critical. This can be solved by coating the movable parts of these devices with super lubricants.
14. What is the field that integrates nanotechnology with biology called?
a) Nanoelectronics
b) Nanomedicine
c) Nanoengineering
d) Nanomaterials science
View Answer
Explanation: Nanomedicine refers to the application of nanotechnology in the field of medicine and healthcare, including diagnosis, drug delivery, imaging, and therapy at the molecular level.
Chapterwise Multiple Choice Questions on Nanotechnology
- Nano Structured Material
- Computational Nanotechnology
- Nanotribology, Nanofabrication & Nanofluidics
- Graphene
- Fullerene
- Carbon Nanotubes
- Nanoparticles
- Nano-Optics
- Nano Electronics & Nano Magnetism
- Nano Clusters
- Nanorods
- Quantum Dots
- Nanoporous Materials
- Nanocomposites
- Nanoprobes
- Nanowires
- Structural Analysis
1. MCQ on Nano Structured Material
The section contains Nanotechnology multiple choice questions and answers on semiconductor materials, nano structured materials like metals, ceramics and polymers.
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2. Computational Nanotechnology
The section contains Nanotechnology questions and answers on computational nanotechnology.
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3. Nanotribology, Nanofabrication & Nanofluidics
The section contains Nanotechnology MCQs on nanotribology, nanofabrication, nanofabrication of nanoscale material, nanofluidics, and their applications.
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4. Nanotechnology MCQ on Graphene
The section contains multiple choice questions and answers on graphene mechanical properties, graphene chemical and structural characterization, graphene defects, graphene production, graphene functional chemistry, and graphene applications.
5. Nanotechnology Multiple Choice Questions on Fullerene
The section contains Nanotechnology questions and answers on fullerene properties and production, fullerene chemistry, fullerene-containing polymers, fullerene as a ligand, heterofullerene, and fullerene purification.
6. Nanotechnology MCQs on Carbon Nanotubes
The section contains MCQs on carbon nanotubes, carbon nanotube synthesis, structure and types, carbon nanotube metrology, mechanical properties, thermal stability, and applications, including heat transport.
7. Nanoparticles
The section contains Nanotechnology multiple choice questions and answers on nanoparticles, nanoparticle colloids, nanoparticle characterization and morphology, nanoparticle synthesis, and medical applications of nanoparticles.
8. Nano-Optics
The section contains questions and answers on nano optics, computational electromagnetics, photonic crystals, optical properties of nanostructures, metamaterials, optical tweezers, far-field, and near-field optical microscopy.
9. MCQ on Nano Electronics & Nano Magnetism
The section contains MCQs on nano electronics and nano magnetism.
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10. Nano Clusters
The section contains Nanotechnology multiple choice questions and answers on nanoclusters and their synthesis, formation of nanostructured materials, surface and bulk magnetism of materials, and nanocrystalline structure.
11. Nanotechnology Multiple Choice Questions on Nanorods
The section contains questions and answers on nanorods and their synthesis.
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12. Nanotechnology MCQ on Quantum Dots
The section contains MCQs on quantum dot synthesis, quantum dot characteristics, and applications.
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13. MCQ on Nanoporous Materials
The section contains Nanotechnology multiple choice questions and answers on nanoporous materials, micro and mesoporous materials.
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14. Multiple Choice Questions on Nanocomposites
The section contains questions and answers on nanocomposites, nanocomposites synthesis, polymer nanocomposites, nanocomposites characteristics and application.
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16. Nanowires
The section contains Nanotechnology multiple choice questions and answers on nanowires, their characteristics, and applications.
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17. Nanotechnology Multiple Choice Questions on Structural Analysis
The section contains questions and answers on structural analysis, scanning tunneling microscopy (STM), and atomic force microscopy (AFM).
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Wish you the best in your endeavor to learn and master Nanotechnology!
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