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  • Question
  • Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.


  • Options
  • A. -20 to 25
  • B. 50 to 75
  • C. 100 to 150
  • D. 250-280

  • Correct Answer
  • 250-280 


  • Polymer Technology problems


    Search Results


    • 1. Unbreakable crockeries are made from __________ polymers.

    • Options
    • A. polystyrene
    • B. melamine
    • C. polystyrene
    • D. polyurathane
    • Discuss
    • 2. Bakelite is

    • Options
    • A. same as polytetra flouro ethylene (PTFE).
    • B. an inorganic polymer.
    • C. same as thermoset phenol formaldehyde.
    • D. not a polymer.
    • Discuss
    • 3. Synthetic rubber

    • Options
    • A. deforms, if stretched to double of its original dimension.
    • B. is brittle at low temperature
    • C. is softer at higher temperature.
    • D. is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases.
    • Discuss
    • 4. Vulcanisation of rubber does not increase its

    • Options
    • A. elasticity
    • B. plasticity
    • C. ductility
    • D. none of these
    • Discuss
    • 5. Properties of a polymer is affected by the

    • Options
    • A. chain length.
    • B. intermolecular forces.
    • C. branching & cross-linking.
    • D. all (a), (b).
    • Discuss
    • 6. In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer?

    • Options
    • A. PTFE
    • B. Buna-S
    • C. PMMA
    • D. Polycaprolactum
    • Discuss
    • 7. Silicone resins, which are highly water repellant and has good heat resistance can not be used

    • Options
    • A. as room temperature adhesive.
    • B. as grease & lubricant.
    • C. hydraulic fluid for heat transfer.
    • D. resin for lamination.
    • Discuss
    • 8. Nylon-66 compared to nylon-6 has

    • Options
    • A. lower melting point.
    • B. more abrasion resistant properties.
    • C. higher hardness.
    • D. all (a), (b) and (c).
    • Discuss
    • 9. Which of the following is not the commercial name of polymethylmethacrylate (PMMA)?

    • Options
    • A. Perspex
    • B. Lucite
    • C. Plexiglass
    • D. Teflon
    • Discuss
    • 10. Which of the following is a copolymer?

    • Options
    • A. Polystyrene
    • B. SBR
    • C. P.T.F.E.
    • D. Polypropylene
    • Discuss


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