Deck 1: Nano Materials and Their Properties

Question 1

Nanomaterials are the materials with at least one dimension measuring less than

A)1 nm
B)10 nm
C)100 nm
D)1000 nm

Answer 1

100 nm

Question 2

A material with one dimension in Nano range and the other two dimensions are large is called

A)micro-material
B)quantum wire
C)quantum well
D)quantum dot

Answer 2

quantum well

Question 3

The colour of the nano gold particles is

A)yellow
B)orange
C)red
D)variable

Answer 3

variable

Question 4

The melting point of particles in nano form

A)increases
B)decreases
C)remains same
D)increases then decreases

Question 5

The first talk about nano-technology was given by                        

A)albert einstein
B)newton
C)gordon e. moore
D)richard feynman

Question 6

Which of the processes of materials was not described as Nanotechnology?

A)separation
B)creation
C)processing
D)consolidation

Question 7

The initial tools used to help launch the nanoscience revolution were                        

A)binoculars
B)microscope
C)scanning probe instruments
D)interferometer

Question 8

When semiconductors are reduced to nanometres they become pure conductors.

Question 9

The major difference between the nano materials compared to the bulk form is the big fraction of the total number of atoms on the surface.

Question 10

The size of atoms is nearly                          

A)0.01 nm
B)0.1 nm
C)1 nm
D)10 nm

Question 11

The four types of Artificial nanomaterials are

A)carbon-based, non-metallic, composites and ceramics
B)carbon-based, metallic, composites and ceramics
C)carbon-based, non-metallic, composites and dendrimers
D)carbon-based, metallic, composites and dendrimers

Question 12

Solution of pure buckminsterfullerene has a colour of                        

A)green
B)purple
C)pink
D)yellow

Question 13

HyFn stands for                      

A)hydrated fluorine
B)hydrolysed fluorine
C)hydrolysed fullerene
D)hydrated fullerene

Question 14

Nano sized polymers built from branched units are called                      

A)dendrimers
B)composites
C)carbon-based materials
D)metal-based materials

Question 15

Which property of nanoparticles provides a driving force for diffusion?

A)optical properties
B)high surface area to volume ratio
C)sintering
D)there is no such property

Question 16

On both ends of the CNTs, which carbon nanostructure is placed?

A)graphite
B)diamond
C)C₆₀
D)benzene

Question 17

Quantum dots can be used in                    

A)crystallography
B)optoelectronics
C)mechanics
D)quantum physics

Question 18

Vesicle is a type of                      

A)nanostructure
B)nanoparticle
C)nanocrystal
D)supramolecular system

Question 19

The response of a material due to the function of heat is known as                      

A)mechanical property
B)electrical property
C)chemical property
D)thermal property

Question 20

Specific heat of materials is expressed in terms of                      

A)w/m k
B)j/k
C)j/kg k
D)m3/kg

Question 21

What effect does the addition of thermal energy have on a material?

A)thermal contraction
B)thermal expansion
C)no change
D)reproduction

Question 22

Which term is used to define the temperature at which a substance changes its status from solid to liquid?

A)boiling point
B)melting point
C)condensation point
D)freezing point

Question 23

The melting point of Iron (Fe) is                    

A)660°c
B)1084°c
C)419°c
D)1538°c

Question 24

What effect do thermal variations in volume have on a body?

A)expansion
B)contraction
C)cracking
D)phase transformation

Question 25

The temperature at which plastics begin to become softer and defer under a load is known as                    

A)softening point
B)melting point
C)eutectic point
D)heat distortion point