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Chemical Engineering :: Polymer Technology

  1. Nylon-6 is manufactured from

  2. A.
    caprolactum.
    B.
    adipic acid and hexamethylene diamine.
    C.
    maleic anhydride and hexamethylene diamine.
    D.
    sebasic acid and hexamethylene diamine.

  3. Caprolactum, a raw material for the manufacture of nylon-6, is produced from

  4. A.
    phenol
    B.
    naphthalene
    C.
    benzene
    D.
    pyridine

  5. The monomer of poly vinyl chloride (PVC) is

  6. A.
    chloroethene
    B.
    ethylene dichloride
    C.
    ethyl chloride
    D.
    chloroform

  7. Buna-S is also known as

  8. A.
    teflon
    B.
    PTFE
    C.
    SBR
    D.
    polycrylates

  9. Neoprene is chemically known as

  10. A.
    polybutandiene
    B.
    styrene butadiene rubber (SBR)
    C.
    polyurethane
    D.
    poly chloroprene

  11. Lavatory cisterns are normally made of

  12. A.
    expanded polystyrene
    B.
    saturated polyester
    C.
    perspex
    D.
    PVC

  13. Plasticisers are added to synthetic plastics to

  14. A.
    impart flexibility.
    B.
    improve workability during fabrication.
    C.
    develop new improved properties not present in the original resin.
    D.
    all (a), (b) and (c).

  15. Cellulose is the main contituent of most __________ fibres.

  16. A.
    acrylic
    B.
    spandex
    C.
    synthetic
    D.
    natural

  17. __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.

  18. A.
    Epoxy
    B.
    Amino
    C.
    Alkyd
    D.
    Phenolic

  19. __________ tubes are good substitude for human blood vessels onrheart by-pass operation.

  20. A.
    PVC
    B.
    Polythene
    C.
    Teflon/dacron
    D.
    Polystyrene