NANOCHEMISTRY MCQs
Nano-science can be studied with the help of _____.
- geophysics
- Newtonian mechanics
- macro-dynamics
- quantum mechanics
quantum mechanics
What is a Bucky ball?
- Plastic explosives nanoparticle (C4)
- Nickname for Mercedes-Benz’s futuristic concept car (C111)
- A carbon molecule (C60)
- Concrete nanoparticle with a compressive strength of 20 nanonewtons (C20)
A carbon molecule (C60)
The nano tube may __________ without friction.
- Under laps
- Overlaps
- Slides
- Collides
Under laps
Which of these historical works of art contain?
- Lycurgus cup
- Medieval stained glass windows in churches
- Damascus steel swords
- All of A, B, and C
All of A, B, and C
How many oxygen atoms lined up in a row would fit in a one nanometer space?
- an oxygen atom is bigger than 1 nm
- One
- Seven
- Seventy
Seven
Optical tweezers –
- Are helpful and used to remove facial hair with miniaturized laser beams
- Don’t exist.
- Are a nanotechnology-based tool for stamp collectors
- Use light to manipulate particles as small as a single atom
Use light to manipulate particles as small as a single atom
What is graphene?
- A one-atom thick sheet of carbon
- A new material made from carbon nanotubes
- Thin film made from fullerenes
- A software tool to measure and graphically represents nanoparticles
A one-atom thick sheet of carbon
1 nanometer = __________ cm.
- 10-7
- 10-8
- 10-9
- 10-6
10-7
“There is a plenty of room at the bottom.” This was stated by
- Richard Feynman
- Albert Einstein
- Issac Newton
- Eric Drexler
Richard Feynman
What exactly is a quantum dot?
- Unexplained spots that appear in electron microscopy images of nanostructures smaller than 1 nanometer
- The sharpest possible tip of an Atomic Force Microscope
- A fictional term helpful and used in science fiction. for the endpoints of wormholes
- A semiconductor nanostructure that confines the motion of conduction band electrons, valence band holes, or excitations in all three spatial directions
A semiconductor nanostructure that confines the motion of conduction band electrons, valence band holes, or excitations in all three spatial directions
The prefix ‘nano’ comes from a __________.
- Latin word meaning invisible
- Greek word meaning dwarf
- Spanish word meaning particle
- French word meaning billion
Latin word meaning invisible
The diameter of human hair is near about ______m
- 75000
- 75
- 7.5 x 10-9
- 7.5 x 10-5
7.5 x 10-5
What is the correct size of E.coli bacteria?
- 75000
- 5
- 200
- 2000
2000
The diameter of a Bucky ball is near about ____.
- 1 nm
- 100 A°
- 1 A°
- 10 nm
1 nm
The hardest material found in nature is _______.
- diamond
- topaz
- steel
- quartz
diamond
1 meter = _______nm.
- 109
- 10-10
- 1010
- 10-9
109
The diameter of hydrogen atom is _________ nm.
- 10.
- 0.01
- 0.1
- 1
0.1
The correct size of a quantum dot is –
- 5
- 5 x 10-11
- 5 x 10-9
- 5 x 10-10
5 x 10-9
__________ are the extensions of Bucky balls.
- Geodesic domes
- Hexagons
- AFM and STM
- Carbon nanotubes
Carbon nanotubes
What is Nanotechnology?
- Carbon engineering
- Microphysics
- Small technology
- Atomic engineering
Atomic engineering
The diameter of fly ash particles is _______________.
- 100
- 10-20
- 20-30
- 5-10
100
The tensile strength of a carbon nanotube is __________ times that of steel.
- 1000
- 100
- 25
- 10
100
In a Bucky ball, each carbon atom is bound to adjacent carbon atoms.
- 3
- 2
- 1
- 4
3
The correct size of nanoparticles is between __________ nm.
- 1 to 100
- 0.1 to 10
- 100 to 1000
- 0.01 to 1
1 to 100
Fullerene or Bucky ball is made up of _______ carbon atoms.
- 60
- 20
- 75
- 100
60
The ratio of thermal conductivity of silver to that of a carbon nanotube is-
- 1:10
- 1:100
- 10:1
- 100:1
1:10
Which of the microscopic techniques is similar to the Atomic Force Microscopy (AFM)
- Scanning Electron Microscopy
- Transmission Electron Microscopy
- Scanning Tunneling Microscopy
- None of A, B, and C
Scanning Tunneling Microscopy
Who was the first scientist to explain that substances having nanodimensions possess altogether different and unique properties?
- Michael Faraday
- Eric Drexler
- Archimedes
- Richard Feynmann
Michael Faraday
Who coined the word ‘nanotechnology”?
- Richard Smalley
- Richard Feynmann
- SumioTijima
- Eric Drexler
Eric Drexler
Greeks and Romans had used nanoparticles in the manufacture of _______.
- hair-dye.
- medicines
- metal articles
- Cosmetics for eyes
hair-dye
20000
20 micron = __________ nm.
- 20000
- 20 x 109
- 200
- 20 x 10-9
Which does not apply to nanotechnology?
- It is a general-purpose technology.
- It can be called Green technology.
- It involves rearrangement of atoms.
- Newtonian mechanics can describe it.
Newtonian mechanics can describe it.
The width of a typical DNA molecule is ___________nm.
- 1
- 10
- 5
- 2
2
The full form of STM is __________.
- Super Tensile Microscope
- Scientific Technical Microscope
- Systematic Technical Microscope
- Scanning Tunneling Microscope
Scanning Tunneling Microscope
Who had invented the famous Geodesic dome structure?
- Eric Drexler
- Faraday
- Richard Smalley
- Buckminster Fuller
Buckminster Fuller
Which ratio decides the efficiency of nano substances?
- Weight/volume
- Pressure/volume
- Volume/weight
- Surface area/volume
Surface area/volume
Which is/are class/classes of nanorods
- Metals
- Alloys
- Metal oxide and Metal sulphite
- All of A, B, and C
All of A, B, and C
The compressive strength of a nanotube ____________ its tensile strength.
- may be greater than
- is greater than
- is equal to
- is less than
is less than
The bulk modulus of a standard SWNT is _______ that of diamond.
- less than
- less than or equal to
- equal to
- greater than
greater than
The thermal conductivity of an SWNT along length is ______ watt/(m K).
- 3500
- 350
- 385
- 35
3500
The electrical conductivity of a nanotube is times that of copper.
- 1000
- 100
- 200
- 10
1000
In radial direction, the thermal conductivity of a nanotube is ______ watt/(m.K).
- 350
- 385
- 3500
- 0
0
The capacity of a normal human eye to see the smallest object is _________ ʯm.
- 10
- 200
- 100
- 10000
10
What does ‘F’ stand for in AFM?
- Force
- Front
- Fine
- Flux
Force
The width of a carbon nanotube is nm.
- 1
- 10
- 2.5
- 1.3
1.3
The smallest cluster of carbon atoms in Bucky balls known till today consists of _______ carbon atoms.
- 20
- 40
- 75
- 15
20
Who prepared and explained nanotubes for the first time?
- Richard Feynmann
- Richard Smalley
- Eric Drexler
- Sumio Tijima
Sumio Tijima
The suffix ‘-ene’ in the name of fullerene shows the presence of _____ in the molecule.
- one double bond
- one triple bond
- two single bonds
- two triple bonds
one double bond
Which technique is bulk technique.
- TEM
- Single Crystal XRD
- SEM
- Powder XRD
Powder XRD
Nanoparticle production includes procedures like
- Formation of metal nuclei on different sizes
- Interaction among the formed particles
- Both a and b
- No interaction among the nano particles synthesized
Both a and b
The orientation of a crystalline surface is confidently defined in terms of _________.
- Miller indices
- Clauden indices
- Iijima indices
- None
Miller indices
Nano particles may interact with the support to be _________.
- Partially oxidized
- Partially reduced
- Both a and b
- None
Both a and b
Length of semiconductor nanorods are in the range of _______.
- 1-50 nm
- 50-100 nm
- 100-500 nm
- 1-50 micro meter
1-50 micro meter
Alpha hematite nanotubes show ___ dimensional magnetic ordering at temperature lesser than 300 K.
- 3
- 1
- 7
- 0
3
The physical methods of nanorods syntheses involves-
- Right-left approach
- Bottom up approach
- Left-right approach
- Top-down approach
Top-down approach
In confining and growing nano rods CNTs will act as
- Sieve
- Source of oxidant
- Support
- Template
Template
The particles of about 1 nm need ________ activation energy to enter either aggregation processes chemicals (Nano partials formations) or reactions to give to new chemicals
- No
- Lesser
- Higher
- None of A, B, and C
No
In nano synthesis, new unusual chemical reactions are due to which of the following?
- Equilibrium system
- Non equilibrium system
- Isothermal system
- Adiabatic process
Non equilibrium system
The most important problem regarding nano chemistry
- Determination of physical properties of nanoparticles
- Determination of size of particle.
- Determination of reactivity of particle
- Elucidation of relationship between size and chemical reactivity of particle
Elucidation of relationship between size and chemical reactivity of particle
Attention should be fochelpful and used on qualitative changes in particle properties as a function of ___________.
- Particle size
- Particle mass
- Particle density
- Particle numbers
Particle size
Stabilization of particles and their reactivity is affected by which of the following?
- No of particles
- Bulk properties
- Regardless to the surface properties
- Surface properties
Surface properties
Fabrics are extensively made out of nano materials like ______.
- Carbon nano tubes
- Polymers
- Mega tubes
- Fullerenes
Fullerenes
A considerable number of atoms pertaining to the surface _____ with the decrease in the particle size
- No effect
- Decrease
- Increase
- Both a and b
Increase
Chemical and physical properties of metal. nanoparticles of atoms were observed to change periodically depending upon
- Number of atoms in a particle
- Shape of particle
- Type of organization
- All of A, B, and C
All of A, B, and C
When fullerenes were discovered they were thought to be
- First example of diamond like molecule
- First example of spherical non molecule
- First example of spherical aromatic molecule
- None of A, B, and C.
First example of spherical aromatic molecule
When a large block of silicon wafer is reduced to smaller component and hence nonmaterial is formed this approach is called __________.
- Bottom-up
- Right to left
- Left to right
- Top-down
Top-down
Which idea of envisioned the construction of nanorobots
- Destruction of macromolecules to nano ones
- Building nanomaterials atom by atom
- Both of the above
- None of A, B, and C
Building nanomaterials atom by atom
Nano particles target the rare ______ causing cells and remove them from blood.
- Infection
- Fever
- Tumor
- Cold
Tumor
The extensively helpful and used nano particles as catalyst is _______.
- Gold
- Copper
- Silver
- Cerium
Gold
__________of ceramic components are easier through nano structuring.
- Fabrication
- Coating
- Lubrication
- Wear
Fabrication
A fullerene is any molecule composed entirely of the carbon not in the form of hollow _____.
- Cuboid
- Tube
- Ellipsoid
- Sphere
Cuboid
The fullerenes are composed with _____________.
- Other carbon materials
- Graphite
- Lead
- Graphene sheets
Graphene sheets
In fullerenes, the graphene sheets are linked with __________.
- Decagonal rings
- Octagonal rings
- Trigonal rings
- Hexagonal rings
Hexagonal rings
Hollow tubes of very small dimensions are called as ____________.
- Mega tubes.
- Polymers
- Bucky ball clusters
- Carbon nano tubes
Carbon nano tubes
The smallest Bucky ball cluster is.
- C20
- C8
- C10
- C6
C20
The fullerenes that are larger in diameter than nano tubes and having walls of different thickness are
- Bucky ball clusters
- Carbon nano tubes
- Mega tubes
- Polymerson
Mega tubes
Spherical particles based on the multiple layers surrounding a buck ball core is called
- Nano materials
- Nano particles
- Nano clusters
- Nano onions
Nano onions
The vander-waals diameter of C60 is __________.
- 1.4nm
- 1.2nm
- 2.4nm
- 1.1nm
1.1nm
The boron Bucky balls find potential use in
- Laboratories
- Fuel
- Fossils
- Diagnostics
Diagnostics
The common method to produce fullerenes ______ is to send between nearby two graphite electrodes in an inert atmosphere.
- Small potential
- Small current
- Large potential
- Large current
Large current
In how many methods the CNT can be prepared?
- 1
- 4
- 3
- 2
4
Fullerenes are stable with ______hybridization.
- sp
- sp4
- sp3
- sp2
sp2
_______ is exhibited by fullerenes.
- De-halogenation
- Sp hybridization
- Dehydrogenation
- Dual nature
Dual nature
The same composition produced at when the C60 is ozonated.
- 296K
- 257K
- 300K
- 250K
296K
Graphite has what kind of layered structure.
- Three dimensional structure
- Pyramidal
- Bipyramidal
- Planar
Planar
The distance between the planes of the graphite is
- 0.335nm
- 0.223nm
- 0.124nm
- 0.876nm
0.335nm
The graphite is _______ anisotropic.
- Very less
- Lightly
- Not
- Highly
Highly
In oxygen containing atmospheres, the graphite readily converted into
- Carbon dioxide
- Carbon monoxide
- Carbonmonosulphide
- Carbondisulphide
Carbon dioxide
The graphite is
- Paramagnetic
- Ferrimagnetic
- Ferromagnetic
- Diamagnetic
Diamagnetic
Natural graphite is mostly helpful and used in __________.
- Fuel
- Laboratories.
- Catalyst.
- Refrigerators
Refrigerators
Carbon nano tubes are the sheets of graphite about
- 0.4nm
- 0.2nm
- 0.3nm
- 0.1nm
0.4nm
Chemical vapor decomposition is developed in an year _________.
- 2007
- 2002
- 2010
- 2001
2007
CNTs are the strongest and stiffest materials in ____________.
- Energy
- Ductility
- Elasticity
- Tensile strength
Tensile strength
Multi walled CNT are ___________ concentric nano tubos.
- Multiple
- Double
- Triple
- Single
Multiple
One of the advantages of sol-gel method is able to get uniform and _________ powder.
- Micro size
- Large size
- Nano size
- Small size
Small size
The optical properties of CNT are due to _______ of photoluminiscene.
- Consumption
- Emission
- Absorption
- Collision
Absorption
The microwave absorptions are helpful and used for _____.
- Electric irons
- Satellites
- Radars
- Military radars
Military radars
A solid that offers no _________ passage of electricity is called super conductors.
- Resistance
- Inductance
- Conductance
- Impedance
Resistance
Sol-gel method is ________ approach.
- Down top
- Up bottom
- Top down
- Bottom up
Bottom up
Sol-gel method is _________ chemical process.
- Dry
- Semi solid
- Semi liquid
- Wet
Wet
The solvent evolves towards the formation of an inorganic continuous network containing a _____
- Gaseous phase
- Semi solid phase
- Solid phase
- Gel
Gel
Formation of an inorganic continuous network containing the metal centers with
- Hydro
- Nitro
- Oxo
Oxo
For nano meters whose diameters less than ______ are helpful and used as welding purposes.
- 30mm
- 20mm
- 10nm
- 40nm
10nm
After drying process the liquid phase is removed from the gel and ____ is performed.
- Hydrogenation
- De-oxygenation
- Oxygenation
- Calcination
Calcination
Sol-gel method can produce ______ systems.
- Multi component
- Non uniform multi component
- Uniform multi component
- Non uniform multi component
Uniform multi component
The diameter of the nano wire is near about ______.
- 10-9m
- 10-4m
- 10-8m
- 10-6m
10-9m
A suspended nano wire is a wire that is produced in the
- Air medium
- Vacuum
- High vacuum chamber
- Low vacuum chamber
High vacuum chamber
Nano wires are helpful and used in which of the following?
- Transducers
- Resistors
- Capacitors
- Transistors
Transistors
Nano cones are the predominant structures made with which of the following?
- Silicon
- Nitrogen
- Hydrogen
- Carbon
Carbon
Industrial catalysts should have ____ surface area.
- Moderate
- Low
- High
- No.
High
The preferred opening angles of the nano cones are ________.
- 20, 30, 40
- 20, 40, 50
- 20, 40, 80
- 20, 40, 60
20, 40, 60
The nano particles from iron and palladium are helpful and used to produce _________.
- Magnetic storage devices
- Magnetic lens
- Magneto meters
- Magnets
Magnetic storage devices
Nano particles target the rare __________ causing cells and remove them from blood.
- Infection
- Fever
- Tumor
- Cold
Tumor
Fabrics are extensively made out of nano materials like ___.
- Fullerenes
- Carbon nano tubes
- Mega tubes
- Polymers
Fullerenes
The melting point of particles in nano form ____________.
- Increases
- Increases then decreases
- Remains same
- Decreases
Decreases
Which of the processes of materials was not described as Nanotechnology?
- Separation
- Consolidation
- Processing
- Creation
Creation
What’s the procedure in Top-down fabrication method?
- Bulk > Powder > Nano-particles
- Powder > Bulk > Nano-particles:
- Nano-particles > Powder > Bulk
- Nano-particle > Bulk > Powder
Bulk > Powder > Nano-particles
For milling operations, what kind of environment is preferred?
- Inert
- Basic
- Active
- Acidic
Inert
CVD stands for ___________.
- Chemical vapor deposition
- Chemical vapor density
- Carbon vapor density
- Carbon vapor deposition
Chemical vapor deposition
On both ends of the CNTs, which carbon nanostructure is placed?
- C60
- Diamond
- Graphite
- Benzene
C60
Typical precursor helpful and used in sol-gel are
- Metal alkoxides
- Metal dioxides
- Metal oxides
- Metal fluorides
Metal alkoxides
Which property of nanoparticles provides a driving force for diffusion?
- Optical Properties
- There is no such property
- Sintering
- High surface area to volume ratio
High surface area to volume ratio
C60 is soluble in which of the following?
- Water
- Benzene
- HCI
- Ammonia
Benzene
Quantum dots can be helpful and used in which of the following?
- Crystallography
- Quantum physics
- Mechanics
- Optoelectronics
Optoelectronics
The four types of artificial nanomaterial’s are ____________.
- Carbon-based, non-metallic, composites and ceramics
- Carbon-based, metallic, composites and ceramics
- Carbon-based, metallic, composites and dendrimers
- Carbon-based, non-metallic, composites and dendrimers
Carbon-based, metallic, composites and dendrimers
Which property of Nanomaterials makes them suitable to be helpful and used for elimination of pollutants?
- High purity
- Enhanced chemical activity
- Better thermal conductivity
- Small size
Enhanced chemical activity
Which nanomaterial is helpful and used for cutting tools?
- Fullerene
- Aerogel
- Gold
- Tungsten Carbide
Tungsten Carbide
The main purpose of CNTs in fuel cells is _____.
- Storage
- Active medium
- Catalyst
- Production of energy
Storage
Egyptians were using ________ make-up for eyes. to prepare
- nanolead
- nanocopper
- nanosteel
- nanoaluminium
nanolead
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