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Chemical Engineering :: Polymer Technology

  1. Nylon 6 as compared to nylon 6, 6 has lower

  2. A.
    abrasion resistance.
    B.
    thermal stability.
    C.
    adhesion to rubber.
    D.
    hardness.

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  3. Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?

  4. A.
    Phosphorous
    B.
    Carbon black
    C.
    Pine oil
    D.
    Rosin

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  5. __________ is an addition polymer

  6. A.
    Nylon
    B.
    Bakelite
    C.
    Polythene
    D.
    none of these

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  7. Branched chair polymers as compared to linear polymers have

  8. A.
    higher melting point.
    B.
    higher tensile strength.
    C.
    lower density.
    D.
    none of these.

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  9. Ion exchange resins are made of

  10. A.
    lucite
    B.
    sulphonated bakelite
    C.
    polystyrene
    D.
    teflon

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  11. Rayon is superior to cotton in making gauge for wound treatment, because rayon

  12. A.
    is a synthetic polymer.
    B.
    does not stick to the wound unlike cotton.
    C.
    can absorb over 90% of its own weight of water.
    D.
    both (b) and (c).

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  13. __________ is a thermosetting plastic.

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

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  15. __________ is a natural fibre.

  16. A.
    Cellulose
    B.
    Dacron
    C.
    Nylon-6
    D.
    none of these

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  17. Pick out the wrong statement.

  18. A.
    Polymeric fibres are never produced by addition polymerisation.
    B.
    Property of tackiness is exhibited by uncured rubber.
    C.
    Sharp melting point is not observed in thermoplastic polymers.
    D.
    Polythene generally has an excellent resistance to ultra violet rays.

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  19. Perspex can be used as a substitute of glass. Its monomer is

  20. A.
    methyl methacrylate
    B.
    DMT
    C.
    butadiene
    D.
    tetrafluroethylene

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