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  • Question

  • The conversion of caprolactum in the above case is about __________ percent.


  • Options
  • A. 25
  • B. 50
  • C. 70
  • D. 90

  • Correct Answer
  • 90 

    • Polymer Technology problems

    Search Results

    • 1. Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called

    • Options
    • A. polyurethane
    • B. silicone rubber
    • C. teflon
    • D. epoxy resin
      • Discuss
    • 2. Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its

    • Options
    • A. tensile strength
    • B. chemical resistance
    • C. flexibility
    • D. all (a), (b) & (c)
      • Discuss
    • 3. Polyvinyl alcohol is used as a

    • Options
    • A. cation/anion exchanger.
    • B. water soluble adhesive.
    • C. textile fibre.
    • D. non-sticky coating on frying pans.
      • Discuss
    • 4. Epoxy resin is a polymer containing two or more groups called epoxide group or ethoxyline group. It is a

    • Options
    • A. polyamide & an elastomer.
    • B. good adhesive.
    • C. surface coating agent.
    • D. both (b) and (c).
      • Discuss
    • 5. Which of the following additives are added to plastics to make it impervious to X-rays?

    • Options
    • A. Asbestos
    • B. Barium salt
    • C. Carborundum
    • D. Phthalic acid
      • Discuss
    • 6. Polymerisation process in which two or more monomers of chemically different nature take part is called

    • Options
    • A. copolymerisation
    • B. addition polymerisation
    • C. chain polymerisation
    • D. none of these
      • Discuss
    • 7. Ebonite is a/an

    • Options
    • A. highly vulcanised rubber.
    • B. natural rubber.
    • C. unvulcanised raw rubber.
    • D. adhesive.
      • Discuss
    • 8. Polyvinyl chloride (PVC) is

    • Options
    • A. a thermosetting material.
    • B. a condensation polymerisation product.
    • C. made by employing emulsion polymerisation.
    • D. none of these.
      • Discuss
    • 9. Synthetic polymer produced by using terephthalic acid and ethylene glycol is

    • Options
    • A. terylene
    • B. nylon-66
    • C. PVC
    • D. polyesterene
      • Discuss
    • 10. Flexible plastic pipes are made of

    • Options
    • A. high density polyethylene (HDPE).
    • B. low density polyethylene (LDPE).
    • C. polypropylene.
    • D. unsaturated polyester.
      • Discuss

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