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Polymer Technology

Polymer Technology
Trade name of __________ is neoprene.

Polytetraflouroethylene
Polychloroprene
Polyisoprene
Poly vinyl acetate

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Polymer Technology
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

Urea-formaldehyde resins
Vinyl polymers
Siloxane elastomers
Polyamides

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Polymer Technology
Polyvinyl acetate is never used for making

Fibres
Moulded articles
Adhesives
All of these

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Polymer Technology
In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher

Densities
Tensile strength
Hardness, rigidity & brittleness
Melting point

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Polymer Technology
Main constituent of cotton fibre is

Lignin
Cellulose
Gelatine
Starch

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Polymer Technology
The process involved in converting rubber into a thin sheet or coating it on fabric is called

Calendering
Mastication
Vulcanisation
Extrusion

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