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  • Question
  • Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.


  • Options
  • A. 50
  • B. 75
  • C. 90
  • D. 99

  • Correct Answer
  • 90 


  • Polymer Technology problems


    Search Results


    • 1. Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

    • Options
    • A. 50°C and 3 - 4 kg/cm2
    • B. 50°C and 1 kgf/cm2
    • C. 250°C and 10 kgf/cm2
    • D. 250°C and 1 kgf/cm2
    • Discuss
    • 2. The physical state in which polymers exist is

    • Options
    • A. melts & rubber like state.
    • B. amorphous glassy state.
    • C. partially crystalline state.
    • D. all (a), (b) and (c).
    • Discuss
    • 3. Which of the following is an inorganic polymer?

    • Options
    • A. Teflon
    • B. Perspex
    • C. Silicones
    • D. Bakelite
    • Discuss
    • 4. Poly Vinyl chloride (PVC) is a __________ material.

    • Options
    • A. thermoplastic
    • B. thermosetting
    • C. fibrous
    • D. chemically active
    • Discuss
    • 5. Contact lenses for eyes are made of perspex, which is nothing but

    • Options
    • A. polymethylmethacrylate
    • B. polystyrene
    • C. unsaturated polyester
    • D. polypropylene
    • Discuss
    • 6. Polyurathane can not be used for making

    • Options
    • A. mattresses & foam
    • B. coating material
    • C. adhesives
    • D. bottles
    • Discuss
    • 7. Main constituent of cotton fibre is

    • Options
    • A. lignin
    • B. cellulose
    • C. starch
    • D. gelatine
    • Discuss
    • 8. Low pressure Zeigler process of polythene manufacture

    • Options
    • A. employs a pressure of 30 kgf/cm2.
    • B. achieves an yield of 95-98% based on ethylene.
    • C. produces very low density polythene.
    • D. does not use any catalyst for polymerisation.
    • Discuss
    • 9. Viscose rayon is

    • Options
    • A. cellulose nitrate
    • B. regenerated cellulose nitrate
    • C. regenerated cellulose acetate
    • D. none of these
    • Discuss
    • 10. Molecular weight of polymers are in the range of

    • Options
    • A. 10 to 103
    • B. 102-107
    • C. 107-109
    • D. 109-1011
    • Discuss


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