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  • Question
  • Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is


  • Options
  • A. nylon-66
  • B. teflon
  • C. polyester
  • D. bakelite

  • Correct Answer
  • teflon 


  • Polymer Technology problems


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    • 1. Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser?

    • Options
    • A. Ethylene glycol
    • B. Stearic acid estors
    • C. Tricresyl phosphate
    • D. Esters of phthalic acid
    • Discuss
    • 2. In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres.

    • Options
    • A. viscose rayon
    • B. acrylic
    • C. polyvinyl acetate
    • D. saturated polyester
    • Discuss
    • 3. Density of low density polythene is about __________ gm/c.c.

    • Options
    • A. 0.38
    • B. 0.56
    • C. 0.81
    • D. 0.91
    • Discuss
    • 4. Polyvinyl acetate is never used for making

    • Options
    • A. moulded articles
    • B. fibres
    • C. adhesives
    • D. all (a), (b) & (c)
    • Discuss
    • 5. Pick out the wrong statement.

    • Options
    • A. Addition polymers are generally formed by chain growth polymerisation.
    • B. Condensation polymers are generally formed by step growth polymerisation.
    • C. Teflon is formed by step growth polymerisation.
    • D. Bakelite is formed by step growth polymerisation.
    • Discuss
    • 6. The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is

    • Options
    • A. polyvinyl alcohol
    • B. polyvinyl acetale
    • C. polyvinyl butyral
    • D. PVC
    • Discuss
    • 7. Styrene butadiene rubber (SBR) is never used for making

    • Options
    • A. coated fabrics
    • B. front wheel tyres of aeroplanes (i.e., heavy duty tyres)
    • C. gaskets
    • D. soles of shoes
    • Discuss
    • 8. Which of the following is generally not drawn into fibre?

    • Options
    • A. Polyamide
    • B. Unsaturated polyesters
    • C. Saturated polyesters
    • D. Polyacrylonitrile
    • Discuss
    • 9. Polycondensation reaction of polymerisation

    • Options
    • A. does not produce linear polymers.
    • B. produces only thermoplastic material.
    • C. produces epoxy polymers.
    • D. does not need any catalyst.
    • Discuss
    • 10. In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is

    • Options
    • A. terylene
    • B. polybutadiene
    • C. PVC
    • D. polypropylene
    • Discuss


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