Polymer Technology __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine. Phenolic Epoxy Alkyd Amino Phenolic Epoxy Alkyd Amino ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is PVC Polyvinyl alcohol Polyvinyl butyral Polyvinyl acetale PVC Polyvinyl alcohol Polyvinyl butyral Polyvinyl acetale ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene butadiene rubber (SBR) is never used for making Coated fabrics Front wheel tyres of aeroplanes (i.e., heavy duty tyres) Soles of shoes Gaskets Coated fabrics Front wheel tyres of aeroplanes (i.e., heavy duty tyres) Soles of shoes Gaskets ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosplastic materials Do not soften on application of heat Are solvent insoluble None of these Are heavily branched molecules Do not soften on application of heat Are solvent insoluble None of these Are heavily branched molecules ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Can be made thermosetting by adding a plasticiser ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Liquid Neither solid nor liquid Solid Combination of solid & liquid Liquid Neither solid nor liquid Solid Combination of solid & liquid ANSWER DOWNLOAD EXAMIANS APP
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