logo

CuriousTab

CuriousTab

Discussion


Home Chemical Engineering Polymer Technology Comments

  • Question
  • Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%)?


  • Options
  • A. Water impermeable cellophane
  • B. Polythene
  • C. Cellulose acetate
  • D. Teflon

  • Correct Answer
  • Polythene 


  • Polymer Technology problems


    Search Results


    • 1. Pick out the wrong statement.

    • Options
    • A. Polystyrene is a thermoplastic polymer.
    • B. Protein is a natural polymer.
    • C. Neoprene is a natural rubber.
    • D. Polythene is a copolymer, while SBR is a homopolymer.
    • Discuss
    • 2. Pick out the wrong statement.

    • Options
    • A. Polymeric fibres are never produced by addition polymerisation.
    • B. Property of tackiness is exhibited by uncured rubber.
    • C. Sharp melting point is not observed in thermoplastic polymers.
    • D. Polythene generally has an excellent resistance to ultra violet rays.
    • Discuss
    • 3. Zeigler process

    • Options
    • A. produces high density polythene.
    • B. uses no catalyst.
    • C. produces low density polythene.
    • D. employs very high pressure.
    • Discuss
    • 4. Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber?

    • Options
    • A. Carbon
    • B. Alkylated diphenyl amine
    • C. Thiokol
    • D. Magnesium
    • Discuss
    • 5. Plastic tubes & pipes are generally made by __________ moulding.

    • Options
    • A. injection
    • B. transfer
    • C. extrusion
    • D. compression
    • Discuss
    • 6. Maximum consumption of polymers is in

    • Options
    • A. electrical insulation
    • B. toys making
    • C. coating and films
    • D. packaging
    • Discuss
    • 7. Rayon is superior to cotton in making gauge for wound treatment, because rayon

    • Options
    • A. is a synthetic polymer.
    • B. does not stick to the wound unlike cotton.
    • C. can absorb over 90% of its own weight of water.
    • D. both (b) and (c).
    • Discuss
    • 8. Polycaprolactum is nothing but

    • Options
    • A. orlon
    • B. nylon 6, 6
    • C. nylon 6
    • D. saran
    • Discuss
    • 9. Phenol formaldehyde is produced by condensation polymerisation. It is also known as

    • Options
    • A. teflon
    • B. bakelite
    • C. polyester
    • D. nylon-66
    • Discuss
    • 10. Which of the following is a natural polyamide fibre.

    • Options
    • A. Wool
    • B. Silk
    • C. Cotton
    • D. None of these
    • Discuss


    Comments

    There are no comments.

Enter a new Comment