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  • Question
  • The repeating units of PTFE are


  • Options
  • A. Cl2CH-CH3
  • B. F2 C = CF2
  • C. F3 C-CF3
  • D. FClC = CF2

  • Correct Answer
  • F2 C = CF2 


  • Polymer Technology problems


    Search Results


    • 1. Thermocole (expanded polystyrene) is not used for

    • Options
    • A. low temperature thermal insulation as in refrigerator and air conditioners.
    • B. accoustic control and ceiling for building.
    • C. high temperature thermal insulation in furnaces.
    • D. packing of delicate electronic gadgets.
    • Discuss
    • 2. __________ polythene is most prone to stress-cracking

    • Options
    • A. High density
    • B. Low density
    • C. Cross-linked
    • D. Linear low density
    • Discuss
    • 3. Terylene is a/an

    • Options
    • A. addition polymer
    • B. poly amide
    • C. homopolymer
    • D. none of these
    • Discuss
    • 4. Polymers are

    • Options
    • A. micromolecules
    • B. macromolecules
    • C. sub-micromolecules
    • D. none of these
    • Discuss
    • 5. Adipic acid is an intermediate in the manufacture of

    • Options
    • A. perspex
    • B. nylon-66
    • C. polystyrene
    • D. bakelite
    • Discuss
    • 6. Orion is

    • Options
    • A. a copolymer.
    • B. a condensation polymer.
    • C. obtained by polymerising vinyl cyanide.
    • D. all (a), (b) and (c).
    • Discuss
    • 7. Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an

    • Options
    • A. rigid foam
    • B. engineering plastic
    • C. thermosetting polymer
    • D. spongy rubber
    • Discuss
    • 8. The rate controlling step in the manufacture of silicone rubber is the

    • Options
    • A. polymer termination step.
    • B. condensation of siloxane to silicone.
    • C. initial hydrolysis of silicone monomer.
    • D. none of these.
    • Discuss
    • 9. Starting material for the production of butadiene in India is

    • Options
    • A. naphthalene
    • B. benzol
    • C. ethyl alcohol
    • D. phthalic anhydride
    • Discuss
    • 10. __________ moulding is used for shaping of thermosetting plastics exclusively.

    • Options
    • A. Compression
    • B. Injection
    • C. Transfer
    • D. Extrusion
    • Discuss


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