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Chemical Engineering :: Polymer Technology

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Polymer Technology - Section 6

  1. Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin.

    2. A.
    resorcinol
    B.
    phenol
    C.
    para-cresol
    D.
    melamine

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  2. Pick out the wrong statement.

    3. A.
    Polystyrene is a thermoplastic polymer.
    B.
    Protein is a natural polymer.
    C.
    Neoprene is a natural rubber.
    D.
    Polythene is a copolymer, while SBR is a homopolymer.

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  3. Neoprene is rendered non-inflammable, because of

    4. A.
    its cross-linked structure.
    B.
    its linear chain structure.
    C.
    the presence of chlorine atoms in its monomer.
    D.
    the absence of chlorine atoms in its monomer.

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  4. Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

    5. A.
    Ni
    B.
    V2O5
    C.
    Fe
    D.
    aluminium triethyl combined with titanium tetrachloride

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  5. Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as

    6. A.
    hardeners
    B.
    anti-shrinkage agents
    C.
    plasticisers
    D.
    transparency improver

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  6. __________ polymer is produced by the copolymerisation of vinyl chloride-vinyl acetate.

    7. A.
    Fibrous
    B.
    Leathery
    C.
    Rubbery
    D.
    Hard

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  7. Which of the following is a natural polyamide fibre.

    8. A.
    Wool
    B.
    Silk
    C.
    Cotton
    D.
    None of these

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  8. __________ is a copolymer.

    9. A.
    Nylon-66
    B.
    Polyrophylene
    C.
    PVC
    D.
    Poly tetra flouro ethylene

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  9. Polycaprolactum is nothing but

    10. A.
    orlon
    B.
    nylon 6, 6
    C.
    nylon 6
    D.
    saran

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  10. Zeigler process

    11. A.
    produces high density polythene.
    B.
    uses no catalyst.
    C.
    produces low density polythene.
    D.
    employs very high pressure.

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