Synthetic Rubber-II MCQ

Test your knowledge with important Synthetic Rubber-II MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Synthetic Rubber-II MCQs on Bissoy. Bissoy App

• Which monomer pairs copolymerize to give nitroso rubber?
  ক

  trifluoronitrosomethane and tetrafluoroethylene

  খ

  tetrafluoronitrosomethane and trifluoroethylene

  গ

  trifluoronitrosomethane and trifluoroethylene

  ঘ

  tetrafluoronitrosomethane and tetrafluoroethylene
• What is the monomer composition of polymer named Vamac?
  ক

  methyl acrylate, ethylene, curing site monomer

  খ

  propylene, ethylene, ethyl acrylate

  গ

  ethyl acrylate, ethylene

  ঘ

  ethyl acrylate, ethylene, cure site monomer
• Which of the following is used as curing agent for acrylate rubbers?
  ক

  sulphur

  খ

  zinc oxide and stearic acid

  গ

  aliphatic amines and polyamines

  ঘ

  metal peroxides
• Which of the following does not resemble to EPDM rubbers?
  ক

  high density

  খ

  moderate tear strength

  গ

  good heat stability

  ঘ

  good storage stability
• What approx proportion of third diene monomer is added to produce EPDM rubber?
  ক

  9-10%

  খ

  4-5%

  গ

  19-20%

  ঘ

  12-15%
• How can the curing of halobutyl rubbers be done conveniently?
  ক

  sulphur cure

  খ

  amine cure

  গ

  quininoid cure

  ঘ

  all of the mentioned
• Which of the following is used for vulcanization of butyl rubber to produce vulcanizates with improved heat resistance and aging characteristics?
  ক

  sulphur

  খ

  oxime and red lead

  গ

  phenol-formaldehyde resins

  ঘ

  carbon black
• Polyisobutylene rubbers can be vulcanized easily using conventional curing systems. State true or false.
  ক

  true

  খ

  false
• Butyl Rubber usually exhibits high gas permeability. State true or false.
  ক

  true

  খ

  false
• Which of the following properties does not correspond to butyl rubbers?
  ক

  poor resilience

  খ

  low heat build-up

  গ

  high internal viscosity

  ঘ

  good flexibility even below -40 C
• What is the monomer composition of IIR polymer or Butyl Rubber?
  ক

  isobutylene

  খ

  isoprene

  গ

  isoprene and isobutylene

  ঘ

  isoprene, isobutylene and chloroprene
• What is the polymerization temperature of isobutylene to give high molecular weight polyisobutylene?
  ক

  80 C

  খ

  -80 C

  গ

  25 C

  ঘ

  -25 C
• Which property of NBR-PVC blends mends its way to be used in footwear soling?
  ক

  good weathering resistance

  খ

  good abrasion resistance

  গ

  good flame resistance

  ঘ

  solvent resistance
• Which one of the following conditions does not resemble to hot nitrile rubbers?
  ক

  high temperature 25-50 C

  খ

  high gel content

  গ

  little gel content

  ঘ

  branched units
• Which of the following resistances is provided by the presence of chlorine in CR molecules?
  ক

  resistance to flex cracking

  খ

  ozone resistance

  গ

  flame resistance

  ঘ

  resistance to oxidative aging