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  • Question
  • Bristles of tooth brushes are made of


  • Options
  • A. nylon-6
  • B. nylon-66
  • C. polystyrene
  • D. PVC

  • Correct Answer
  • nylon-66 


  • Polymer Technology problems


    Search Results


    • 1. A copolymer is formed by the combination of two or more monomer molecules

    • Options
    • A. in a chain without the elimination of water.
    • B. with the elimination of small amount of water.
    • C. of the same monomer by elimination of small molecules of water.
    • D. none of these.
    • Discuss
    • 2. Polystyrene is a light, transparent, thermoplastic material used for making

    • Options
    • A. toys and combs
    • B. packaging bags
    • C. non-sticking utensils
    • D. electrical insulation
    • Discuss
    • 3. Linear polymers are normally

    • Options
    • A. thermosetting.
    • B. thermosplastic.
    • C. elastometric.
    • D. having extremely high softening point.
    • Discuss
    • 4. The monomer for the production of neoprene rubber is

    • Options
    • A. acetylene
    • B. chloroprene
    • C. isoprene
    • D. none of these
    • Discuss
    • 5. Which of the following is not a thermoplastic material?

    • Options
    • A. Epoxy polymer
    • B. PVC
    • C. Polystyrene
    • D. Polythene
    • Discuss
    • 6. Polystyrene is a __________ plastic at room temperature.

    • Options
    • A. ductile
    • B. brittle
    • C. malleable
    • D. none of these
    • Discuss
    • 7. Alkyd resin can not be used for making

    • Options
    • A. plasticiser
    • B. paint & varnish
    • C. fibres
    • D. film forming materials
    • Discuss
    • 8. Valcunisation of rubber decreases its

    • Options
    • A. tensile strength.
    • B. resistance to organic solvents.
    • C. tackiness.
    • D. working temperature range.
    • Discuss
    • 9. Plastic articles are normally produced by __________ moulding.

    • Options
    • A. green sand
    • B. injection
    • C. shell
    • D. dry sand
    • Discuss
    • 10. Amino resins are used in paper treatment to improve its

    • Options
    • A. wet tear and bursting strength.
    • B. folding endurance
    • C. wet rub resistance
    • D. all (a), (b) & (c)
    • Discuss


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