logo

CuriousTab

CuriousTab

Discussion


Home Chemical Engineering Polymer Technology Comments

  • Question
  • In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is


  • Options
  • A. terylene
  • B. polybutadiene
  • C. PVC
  • D. polypropylene

  • Correct Answer
  • terylene 


  • Polymer Technology problems


    Search Results


    • 1. Polycondensation reaction of polymerisation

    • Options
    • A. does not produce linear polymers.
    • B. produces only thermoplastic material.
    • C. produces epoxy polymers.
    • D. does not need any catalyst.
    • Discuss
    • 2. Which of the following is generally not drawn into fibre?

    • Options
    • A. Polyamide
    • B. Unsaturated polyesters
    • C. Saturated polyesters
    • D. Polyacrylonitrile
    • Discuss
    • 3. Styrene butadiene rubber (SBR) is never used for making

    • Options
    • A. coated fabrics
    • B. front wheel tyres of aeroplanes (i.e., heavy duty tyres)
    • C. gaskets
    • D. soles of shoes
    • Discuss
    • 4. The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is

    • Options
    • A. polyvinyl alcohol
    • B. polyvinyl acetale
    • C. polyvinyl butyral
    • D. PVC
    • Discuss
    • 5. Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is

    • Options
    • A. nylon-66
    • B. teflon
    • C. polyester
    • D. bakelite
    • Discuss
    • 6. __________ is normally used for the manufacture of refrigerator components and transistor parts.

    • Options
    • A. Polyproylene
    • B. Polystyrene
    • C. Polyester
    • D. Polyurathene
    • Discuss
    • 7. In nylon-6, the number 6 represents the total number of

    • Options
    • A. carbon atoms in the ring.
    • B. carbon atoms in the linear polymer chain.
    • C. nitrogen atoms in the ring.
    • D. hydrogen atoms in the ring.
    • Discuss
    • 8. Which of the following has the weakest intermolecular forces?

    • Options
    • A. Polyisoprene
    • B. Nylon-66
    • C. Polystyrene
    • D. Bakelite
    • Discuss
    • 9. Size range of polymer molecules varies from __________ metre.

    • Options
    • A. 10-2 to 10-5
    • B. 10-4 to 10-7
    • C. 10-1 to 10-2
    • D. 10-8 to 10-10
    • Discuss
    • 10. Gutta parcha rubber is

    • Options
    • A. soft & tacky at room temperature.
    • B. an isomer of natural rubber.
    • C. a thermosetting resin.
    • D. recovered by coagulation of rubber latex.
    • Discuss


    Comments

    There are no comments.

Enter a new Comment