Polymer Technology Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding Nitro cellulose Camphor Glycerol None of these Nitro cellulose Camphor Glycerol None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Flexible foam (for mattresses) are usually made of PVC Polyamides Polyurethanes Silicone rubber PVC Polyamides Polyurethanes Silicone rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation of saturated dicarboxylic acid with polyhydric alcohol produces Phenolic resin Polyamide Epoxy resin Alkyd resin Phenolic resin Polyamide Epoxy resin Alkyd resin ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Polymerisation mechanism Resistance to heat Molecular sizes Magnitude of intermolecular forces Polymerisation mechanism Resistance to heat Molecular sizes Magnitude of intermolecular forces ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Softening temperature is 200°C Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Properties of a polymer is affected by the All of these Branching & cross-linking Intermolecular forces Chain length All of these Branching & cross-linking Intermolecular forces Chain length ANSWER DOWNLOAD EXAMIANS APP
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