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  • Question
  • Poly tetra flouro ethylene (PTFE) is known as


  • Options
  • A. dacron
  • B. teflon
  • C. bakelite
  • D. celluloid

  • Correct Answer
  • teflon 


  • Polymer Technology problems


    Search Results


    • 1. In condensation polymerisation as compared to addition polymerisation

    • Options
    • A. the monomers are unsaturated compounds.
    • B. no co-product is lost.
    • C. the monomers contain two functional groups.
    • D. generally only one monomer is involved
    • Discuss
    • 2. Cellulose content in bomboo fibre is about __________ percent.

    • Options
    • A. 10
    • B. 20
    • C. 50
    • D. 85
    • Discuss
    • 3. In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

    • Options
    • A. cross linked polystyrene.
    • B. phenol formaldehyde resins.
    • C. polyesters.
    • D. polyamides.
    • Discuss
    • 4. Thermosetting resins/polymers as compared to thermoplastic ones are

    • Options
    • A. soluble in all organic solvents.
    • B. more brittle.
    • C. formed by addition polymerisation only.
    • D. easily reshaped & reused.
    • Discuss
    • 5. Gutta parcha rubber is

    • Options
    • A. soft & tacky at room temperature.
    • B. an isomer of natural rubber.
    • C. a thermosetting resin.
    • D. recovered by coagulation of rubber latex.
    • Discuss
    • 6. The generic chemical name for the class of polymers which are commerically known as nylons is

    • Options
    • A. polyolefins
    • B. polyamide
    • C. polyacrylate
    • D. polyurathane
    • Discuss
    • 7. Thermosplastic materials

    • Options
    • A. do not soften on application of heat.
    • B. are heavily branched molecules.
    • C. are solvent insoluble.
    • D. none of these.
    • Discuss
    • 8. Properties of a polymer is affected by the

    • Options
    • A. chain length.
    • B. intermolecular forces.
    • C. branching & cross-linking.
    • D. all (a), (b).
    • Discuss
    • 9. Vulcanisation of rubber does not increase its

    • Options
    • A. elasticity
    • B. plasticity
    • C. ductility
    • D. none of these
    • Discuss
    • 10. 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


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