Q.1
How many initiator fragments are present in the dead polymer formed by combination mode of chain termination?
  • a) 2
  • b) 1
  • c) 3
  • d) 0
Q.2
What is the initiator efficiency in chain initiation step of free radical polymerization?
  • a) fraction of unreacted monomers
  • b) extent of reaction
  • c) fraction of radicals actually contributing
  • d) number of initiator molecules
Q.3
What is the expression for the rate of chain initiation of free radical chain growth polymerization?
  • a) fkd[I] 
  • b) 2fkd[I] 
  • c) kd[I]/2 
  • d) kd[I] 
Q.4
The data for bulk chain polymerization having potassium persulfate as initiator is given-
  • a) 0.012
  • b) 0.0162
  • c) 0.05
  • d) 0.1
Q.5
What is the rate chain initiation reaction for initiator efficiency of 0.when concentration and decomposition rate of benzoyl peroxide are 4 mol/m3 and 3.24*10-6 mmol-s-respectively?
  • a) 2.07*10-5
  • b) 1.57*10-5
  • c) 3.27*10-5
  • d) 1.03*10-5
Q.6
What is the expression for rate of termination reaction of free radical polymerization?
  • a) kt[M∙]2
  • b) 2kt[M∙]2
  • c) 2fkt[M∙] 
  • d) fkt[M∙] 
Q.7
Consider following data for bulk polymerization, with benzoyl peroxide as initiator.
  • a) 0.7
  • b) 0.53
  • c) 0.26
  • d) 0.82
Q.8
How does polymerization rate at a given monomer concentration vary, if rate of chain initiation is tripled?
  • a) doubled
  • b) tripled
  • c) increment by factor of 30.5
  • d) remains constant
Q.9
Which order kinetics does the rate of polymer formation, in free radical polymerization, follow corresponding to monomer concentration?
  • a) 1
  • b) 0
  • c) 2
  • d) 3
0 h : 0 m : 1 s