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  • Question
  • 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

  • Correct Answer
  • 10-2 to 10-5 


  • Polymer Technology problems


    Search Results


    • 1. Which of the following has the weakest intermolecular forces?

    • Options
    • A. Polyisoprene
    • B. Nylon-66
    • C. Polystyrene
    • D. Bakelite
    • Discuss
    • 2. 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
    • 3. __________ is normally used for the manufacture of refrigerator components and transistor parts.

    • Options
    • A. Polyproylene
    • B. Polystyrene
    • C. Polyester
    • D. Polyurathene
    • Discuss
    • 4. 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
    • Discuss
    • 5. 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
    • 6. 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
    • 7. Thermosetting resins/polymers as compared to thermoplastic ones are

    • Options
    • A. soluble in all organic solvents.
    • B. more brittle.
    • C. formed by addition polymerisation only.
    • D. easily reshaped & reused.
    • Discuss
    • 8. In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of

    • Options
    • A. cross linked polystyrene.
    • B. phenol formaldehyde resins.
    • C. polyesters.
    • D. polyamides.
    • Discuss
    • 9. Cellulose content in bomboo fibre is about __________ percent.

    • Options
    • A. 10
    • B. 20
    • C. 50
    • D. 85
    • Discuss
    • 10. In condensation polymerisation as compared to addition polymerisation

    • Options
    • A. the monomers are unsaturated compounds.
    • B. no co-product is lost.
    • C. the monomers contain two functional groups.
    • D. generally only one monomer is involved
    • Discuss


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