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Polymer Technology

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

DMT
Methyl methacrylate
Tetrafluroethylene
Butadiene

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Polymer Technology
Softening point of high density polythene is about __________ °C.

85
205
135
165

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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

Siloxane elastomers
Vinyl polymers
Urea-formaldehyde resins
Polyamides

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Polymer Technology
Flexible foam (for mattresses) are usually made of

Polyurethanes
PVC
Silicone rubber
Polyamides

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

Strength
Plasticity
Elasticity
Weathering characteristics

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Polymer Technology
Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding

None of these
Nitro cellulose
Glycerol
Camphor

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