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This set of Fundamentals of NanoScience Multiple Choice Questions & Answers (MCQs) focuses on Fundamentals Of Nanoscience Set 5

Q1 | Hollow tubes of very small dimensions are called as                            
  • mega tubes
  • carbon nano tubes
  • bucky ball clusters
  • polymers
Q2 | The fullerenes that are larger in diameter than nano tubes and having walls of different thickness are                          
  • mega tubes
  • carbon nano tubes
  • bucky ball clusters
  • polymers
Q3 | Mega tubes are used for                      
  • transport
  • chemical industries
  • laboratories
  • preparation of compounds
Q4 | The chain, two dimensional and three dimensional polymers are formed under              
  • vacuum
  • high pressure
  • low pressure
  • no pressure
Q5 | Spherical particles based on the multiple layers surrounding a buck ball core is called
  • nano onions
  • nano particles
  • nano clusters
  • nano materials
Q6 | The buckminister fullerene is naturally occurring element found in                  
  • earth
  • soot
  • smoke
  • fog
Q7 | The structure of C60 is called as                
  • isohedron
  • truncated isohedron
  • trigonal
  • trigonal bipyramidal
Q8 | The vander-waals diameter of C60 is
  • 1.1nm
  • 1.2nm
  • 1.3nm
  • 1.4nm
Q9 | The bond length of the C60 is                  
  • 1.1 ao
  • 1.2 ao
  • 1.3 ao
  • 1.4 ao
Q10 | Carbon nano tubes are the sheets of graphite about                  
  • 0.1nm
  • 0.2nm
  • 0.3nm
  • 0.4nm
Q11 | Carbon nano tubes are also called as
  • bucky tubes
  • bulky tubes
  • bulk tubes
  • buck balls
Q12 | In how many methods the CNT can be prepared?
  • 1
  • 2
  • 3
  • 4
Q13 | The current used in the arc discharge method is about                    
  • 100ma
  • 200ma
  • 300ma
  • 400ma
Q14 | A water cooled surface is used in the process to collect                      
  • nano particles
  • nano tubes
  • nano spheres
  • nano sheets
Q15 | The carbon contained in the negative electrode sublimates.
  • true
  • false
Q16 | Plasma torch method is similar to the
  • laser ablation
  • arc discharge
  • chemical vapour decomposition
  • electrolysis
Q17 | Plasma torch method produces              of CNT per minute.
  • 1gms
  • 2gms
  • 3gms
  • 4gms
Q18 | Chemical vapour decomposition is developed in an year                  
  • 2001
  • 2002
  • 2006
  • 2007
Q19 | The substrate is heated to                  
  • 200c
  • 300c
  • 400c
  • 700c
Q20 | CNT s are the strongest and stiffest materials in                        
  • tensile strength
  • ductility
  • elasticity
  • energy
Q21 | CNT posses strength up to                  
  • 100gpa
  • 200gpa
  • 400gpa
  • 300gpa
Q22 | Standard single walled CNT withstands a pressure up to              without deformation.
  • 1gpa
  • 2gpa
  • 20gpa
  • 25gpa
Q23 | Multi walled CNT are                  concentric nano tubes.
  • single
  • double
  • triple
  • multiple
Q24 | The nano tube may                    without friction.
  • slides
  • overlaps
  • under laps
  • collides
Q25 | CNT is                        
  • conductor
  • insulator
  • semi conductor
  • impure metal