Polymer Technology Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically Phenolic resins Polytetraflouroethylene(PTFE) Polycarbonates Polymethyl methacrylate (PMMA) Phenolic resins Polytetraflouroethylene(PTFE) Polycarbonates Polymethyl methacrylate (PMMA) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In condensation polymerisation as compared to addition polymerisation Generally only one monomer is involved The monomers are unsaturated compounds No co-product is lost The monomers contain two functional groups Generally only one monomer is involved The monomers are unsaturated compounds No co-product is lost The monomers contain two functional groups ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Pickout the wrong statement. Polymers made of only one monomer is called homopolymer Polymers made of more than one monomer is called copolymer or mixed polymer 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 only one monomer is called homopolymer Polymers made of more than one monomer is called copolymer or mixed polymer The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Vulcanised rubber is more elastic than natural rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of stabiliser during PVC manufacture is done to Improve its elasticity Reduce the melt viscosity & glass transition temperature Prevent its thermal degradation Improve its impact strength Improve its elasticity Reduce the melt viscosity & glass transition temperature Prevent its thermal degradation Improve its impact strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Benzoyl chloride is not used as a catalyst in the manufacture of Polypropylene Polyvinyl chloride-co-vinylacetate Polyvinyl acetate Polystyrene Polypropylene Polyvinyl chloride-co-vinylacetate Polyvinyl acetate Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ polythene is most prone to stress-cracking Low density High density Cross-linked Linear low density Low density High density Cross-linked Linear low density ANSWER DOWNLOAD EXAMIANS APP
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