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  • Question

  • Elastomers are


  • Options
  • A. thermosetting material.
  • B. exemplified by protein derivatives.
  • C. having high flexural strength.
  • D. having very high tensile strength and heat resistance.

  • Correct Answer
  • having high flexural strength. 

    • Polymer Technology problems

    Search Results

    • 1. Which of the following rubbers has the widest service temperature range (-75 to 275°C)?

    • Options
    • A. Butyl rubber
    • B. Silicon rubber
    • C. Nitrile rubber
    • D. Silicone rubber
      • Discuss
    • 2. Which of the following is a copolymer?

    • Options
    • A. Polystyrene
    • B. SBR
    • C. P.T.F.E.
    • D. Polypropylene
      • Discuss
    • 3. Which of the following is not the commercial name of polymethylmethacrylate (PMMA)?

    • Options
    • A. Perspex
    • B. Lucite
    • C. Plexiglass
    • D. Teflon
      • Discuss
    • 4. Nylon-66 compared to nylon-6 has

    • Options
    • A. lower melting point.
    • B. more abrasion resistant properties.
    • C. higher hardness.
    • D. all (a), (b) and (c).
      • Discuss
    • 5. Silicone resins, which are highly water repellant and has good heat resistance can not be used

    • Options
    • A. as room temperature adhesive.
    • B. as grease & lubricant.
    • C. hydraulic fluid for heat transfer.
    • D. resin for lamination.
      • Discuss
    • 6. All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic

    • Options
    • A. filaments
    • B. pipes
    • C. buckets
    • D. tubings
      • Discuss
    • 7. Epoxy resins (i.e., epoxide polymers)

    • Options
    • A. are made by addition polymerisation reaction only.
    • B. contain an epoxy group ( ) at the ends of the polymer.
    • C. are cross-linked polymers only.
    • D. use emulsion polymerisation methods.
      • Discuss
    • 8. Which of the following polymers does not belong to the class of polyacrylate polymer?

    • Options
    • A. PMMA
    • B. Polyacrylonitrile
    • C. Polyethyl acrylate
    • D. None of these
      • Discuss
    • 9. Catalyst used in the production of high density polythene by low pressure Ziegler process is

    • Options
    • A. aluminium triethyl activated with TiCl4
    • B. platinum
    • C. molybdenum
    • D. Nickel
      • Discuss
    • 10. 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

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