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  • Question
  • Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of


  • Options
  • A. cold SBR
  • B. butyl rubber
  • C. Bunai N
  • D. Buna S

  • Correct Answer
  • butyl rubber 


  • Polymer Technology problems


    Search Results


    • 1. Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

    • Options
    • A. protect rubber goods from attack by oxygen & ozone present in the atmosphere.
    • B. reduce its viscosity to permit easier processing.
    • C. reduce the time of vulcanisation and quantity of vulcanising agent.
    • D. increase its viscosity.
    • Discuss
    • 2. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.

    • Options
    • A. -5
    • B. 10-30
    • C. 250-280
    • D. 500-600
    • Discuss
    • 3. Transistor parts and refrigerator components are normally made of

    • Options
    • A. polystyrene
    • B. polyester
    • C. high density polythene
    • D. polyurathane
    • Discuss
    • 4. Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex?

    • Options
    • A. Ammonium alum
    • B. Potassium alum
    • C. both a & b
    • D. neither a nor b
    • Discuss
    • 5. Spray test determines the __________ of refractories.

    • Options
    • A. resistance to slag penetration
    • B. resistance to CO attack
    • C. RUL
    • D. permanent linear change
    • Discuss
    • 6. Automobile steering wheels are normally made of

    • Options
    • A. cellulose acetate
    • B. cellulose nitrate
    • C. PVC
    • D. high density polythene
    • Discuss
    • 7. Orlan fibre which is used as a wool sub stitute is

    • Options
    • A. an amorphous polymer.
    • B. a natural polymeric fibre.
    • C. polyacrylonitrile.
    • D. polymethylmethacrylate (PMMA).
    • Discuss
    • 8. Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.

    • Options
    • A. solid
    • B. liquid
    • C. combination of solid & liquid
    • D. neither solid nor liquid
    • Discuss
    • 9. Cellulose is the main contituent of most __________ fibres.

    • Options
    • A. acrylic
    • B. spandex
    • C. synthetic
    • D. natural
    • Discuss
    • 10. Mastication of rubber means

    • Options
    • A. its softening.
    • B. a treatment to retard its deterioration due to oxidation.
    • C. improving its curing rate.
    • D. depression of its freezing point.
    • Discuss


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