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Chemical Engineering :: Polymer Technology

Polymer Technology - Section 1
Polymer Technology - Section 2
Polymer Technology - Section 3
Polymer Technology - Section 4
Polymer Technology - Section 5
Polymer Technology - Section 6

  1. The synthetic fibres produced from __________ are known as rayon.

    2. A.
    lignin
    B.
    cellulose
    C.
    polyamides
    D.
    ethylene glycol

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  2. Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

    3. A.
    protect rubber goods from attack by oxygen & ozone present in the atmosphere.
    B.
    reduce its viscosity to permit easier processing.
    C.
    reduce the time of vulcanisation and quantity of vulcanising agent.
    D.
    increase its viscosity.

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  3. Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.

    4. A.
    solid
    B.
    liquid
    C.
    combination of solid & liquid
    D.
    neither solid nor liquid

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  4. Which of the following is generally not used as eord for synthetic rubber tyre casing ?

    5. A.
    Dacron
    B.
    Nylon
    C.
    Cellulose
    D.
    None of these

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  5. __________ is not a polyester fibre.

    6. A.
    Terylene
    B.
    Dacron
    C.
    Nylon
    D.
    Polyacrylonitrite

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  6. Nitrile rubber is produced by the polymerisation of

    7. A.
    acrylonitrile & butadiene.
    B.
    acrylonitrile & styrene.
    C.
    isobutylene & isoprene.
    D.
    none of these.

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  7. Celluloid is

    8. A.
    cellulose acetate
    B.
    regenerated cellulose
    C.
    cellulose nitrate
    D.
    cellulose acetate butyrate

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  8. Styrene butadiene rubber (SBR) as compared to natural rubber has

    9. A.
    poor tensile strength.
    B.
    poorer resistance.
    C.
    greater amount of heat build up heavy loading.
    D.
    all (a), (b) ana (c).

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  9. Which of the following polymers has the tendency of decomposing before melting ?

    10. A.
    Polystyrene
    B.
    Nylon
    C.
    PVC
    D.
    None of these

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  10. Which of the following polymers belong to the class of formaldehyde resin ?

    11. A.
    Melamine resins
    B.
    Teflon
    C.
    Dacron
    D.
    None of these

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