Deck 5: Carbon Nanostructures and Applications

Question 1

The fullerenes that are larger in diameter than nano tubes and having walls of different thickness are                          

A)mega tubes
B)carbon nano tubes
C)bucky ball clusters
D)polymers

Answer 1

mega tubes

Question 2

Mega tubes are used for                      

A)transport
B)chemical industries
C)laboratories
D)preparation of compounds

Answer 2

transport

Question 3

The chain, two dimensional and three dimensional polymers are formed under              

A)vacuum
B)high pressure
C)low pressure
D)no pressure

Answer 3

high pressure

Question 4

Spherical particles based on the multiple layers surrounding a buck ball core is called

A)nano onions
B)nano particles
C)nano clusters
D)nano materials

Question 5

The buckminister fullerene is naturally occurring element found in                  

A)earth
B)soot
C)smoke
D)fog

Question 6

The structure of C₆₀ is called as                

A)isohedron
B)truncated isohedron
C)trigonal
D)trigonal bipyramidal

Question 7

The vander-waals diameter of C₆₀ is

A)1.1nm
B)1.2nm
C)1.3nm
D)1.4nm

Question 8

The bond length of the C₆₀ is                  

A)1.1 ao
B)1.2 ao
C)1.3 ao
D)1.4 ao

Question 9

Carbon nano tubes are the sheets of graphite about                  

A)0.1nm
B)0.2nm
C)0.3nm
D)0.4nm

Question 10

Carbon nano tubes are also called as

A)bucky tubes
B)bulky tubes
C)bulk tubes
D)buck balls

Question 11

In how many methods the CNT can be prepared?

A)1
B)2
C)3
D)4

Question 12

A water cooled surface is used in the process to collect                      

A)nano particles
B)nano tubes
C)nano spheres
D)nano sheets

Question 13

Plasma torch method is similar to the

A)laser ablation
B)arc discharge
C)chemical vapour decomposition
D)electrolysis

Question 14

Plasma torch method produces --------- of CNT per minute.

A)1gms
B)2gms
C)3gms
D)4gms

Question 15

Chemical vapour decomposition is developed in an year                  

A)2001
B)2002
C)2006
D)2007

Question 16

CNT s are the strongest and stiffest materials in                        

A)tensile strength
B)ductility
C)elasticity
D)energy

Question 17

CNT posses strength up to                  

A)100gpa
B)200gpa
C)400gpa
D)300gpa

Question 18

Standard single walled CNT withstands a pressure up to---------without deformation.

A)1gpa
B)2gpa
C)20gpa
D)25gpa

Question 19

Multi walled CNT are----------------concentric nano tubes.

A)single
B)double
C)triple
D)multiple

Question 20

The nano tube may-----------without friction.

A)slides
B)overlaps
C)under laps
D)collides

Question 21

CNT is                        

A)conductor
B)insulator
C)semi conductor
D)impure metal

Question 22

CNT exhibits a property called ballistic condition.

Question 23

CNT is                    

A)non toxic
B)toxic
C)very safe
D)not having graphene

Question 24

CNT is used to make                        

A)paper batteries
B)high voltage batteries
C)car batteries
D)clock batteries

Question 25

The microwave absorptions are used for

A)military radars
B)solar cells
C)space elevators
D)stab proof