Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Is produced by polycondensation reaction ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Contact lenses for eyes are made of perspex, which is nothing but Unsaturated polyester Polypropylene Polymethylmethacrylate Polystyrene Unsaturated polyester Polypropylene Polymethylmethacrylate Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the Decorative laminates Tanning of leather Strengthening of plaster of paris Electrical insulation purpose Decorative laminates Tanning of leather Strengthening of plaster of paris Electrical insulation purpose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin. Melamine Para-cresol Resorcinol Phenol Melamine Para-cresol Resorcinol Phenol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? Melamine resins Teflon Dacron None of these Melamine resins Teflon Dacron None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Pickout the wrong statement. Vulcanised rubber is more elastic than natural rubber Polymers made of more than one monomer is called copolymer or mixed polymer Polymers made of only one monomer is called homopolymer The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Vulcanised rubber is more elastic than natural rubber Polymers made of more than one monomer is called copolymer or mixed polymer Polymers made of only one monomer is called homopolymer The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres ANSWER DOWNLOAD EXAMIANS APP
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