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Chemical Engineering :: Polymer Technology

  1. Poly tetra flouro ethylene (PTFE) is known as

  2. A.
    dacron
    B.
    teflon
    C.
    bakelite
    D.
    celluloid

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  3. Thermosetting resins/polymers as compared to thermoplastic ones are

  4. A.
    soluble in all organic solvents.
    B.
    more brittle.
    C.
    formed by addition polymerisation only.
    D.
    easily reshaped & reused.

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  5. The generic chemical name for the class of polymers which are commerically known as nylons is

  6. A.
    polyolefins
    B.
    polyamide
    C.
    polyacrylate
    D.
    polyurathane

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  7. Polycondensation reaction of polymerisation

  8. A.
    does not produce linear polymers.
    B.
    produces only thermoplastic material.
    C.
    produces epoxy polymers.
    D.
    does not need any catalyst.

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  9. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but

  10. A.
    polyacrylonitrile
    B.
    polyamide
    C.
    saturated polyester
    D.
    alkyd resin

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  11. Which of the following is a polymer of hexamethylene diamine and adipic acid ?

  12. A.
    Nylon-6
    B.
    Nylon-66
    C.
    Nylon-6, 10
    D.
    Epoxy resin

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  13. 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

  14. A.
    nylon-66
    B.
    teflon
    C.
    polyester
    D.
    bakelite

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  15. The process involved in converting rubber into a thin sheet or coating it on fabric is called

  16. A.
    extrusion
    B.
    mastication
    C.
    calendering
    D.
    vulcanisation

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  17. Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?

  18. A.
    Starch
    B.
    Cellulose
    C.
    Proteins
    D.
    Nucleic acids

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  19. Nylon-66 is manufactured from

  20. A.
    adipic acid and hexamenthylene diamine.
    B.
    caprolactum.
    C.
    maleic anhydride and hexamethylene diamine.
    D.
    dimethyl terephthalate (DMT) and ethylene glycol.

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