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Chemical Engineering :: Polymer Technology

  1. Orlan fibre which is used as a wool sub stitute is

  2. A.
    an amorphous polymer.
    B.
    a natural polymeric fibre.
    C.
    polyacrylonitrile.
    D.
    polymethylmethacrylate (PMMA).

  3. Neoprene is the trade name of

  4. A.
    polyurethane
    B.
    phenol formaldehyde
    C.
    polychlorophrene
    D.
    styrene butadiene rubber (SBR)

  5. Trade name of __________ is neoprene.

  6. A.
    polychloroprene
    B.
    polyisoprene
    C.
    polytetraflouroethylene
    D.
    poly vinyl acetate

  7. SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at

  8. A.
    1:3
    B.
    3:1
    C.
    1:2
    D.
    2:1

  9. Dacron is a/an

  10. A.
    polyester
    B.
    unsaturated polyester
    C.
    polyamide
    D.
    inorganic polymer

  11. Starting material for the production of SBR is

  12. A.
    ethyl alcohol
    B.
    ethylene
    C.
    both (a) & (b)
    D.
    neither (a) nor (b)

  13. Which of the following is a copolymer ?

  14. A.
    PVC
    B.
    Bakelite
    C.
    Polythene
    D.
    Teflon

  15. Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its

  16. A.
    elasticity
    B.
    strength
    C.
    plasticity
    D.
    weathering characteristics

  17. The organic acid monomer in nylon 66 is

  18. A.
    sebasic acid
    B.
    terephthalic acid
    C.
    adipic acid
    D.
    benzoic acid

  19. Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is

  20. A.
    chloroethane
    B.
    chlorophrene
    C.
    isoprene
    D.
    none of these