Polymer Technology Flexible foam (for mattresses) are usually made of Polyurethanes PVC Polyamides Silicone rubber Polyurethanes PVC Polyamides Silicone rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Neither solid nor liquid Solid Combination of solid & liquid Liquid Neither solid nor liquid Solid Combination of solid & liquid Liquid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene Produces very low density polythene Does not use any catalyst for polymerisation Employs a pressure of 30 kgf/cm² Achieves an yield of 95-98% based on ethylene Produces very low density polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The process involved in converting rubber into a thin sheet or coating it on fabric is called Extrusion Mastication Calendering Vulcanisation Extrusion Mastication Calendering Vulcanisation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ? Water impermeable cellophane Teflon Polythene Cellulose acetate Water impermeable cellophane Teflon Polythene Cellulose acetate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Pickout the wrong statement. Polymers made of only one monomer is called homopolymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Polymers made of more than one monomer is called copolymer or mixed polymer Polymers made of only one monomer is called homopolymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Polymers made of more than one monomer is called copolymer or mixed polymer ANSWER DOWNLOAD EXAMIANS APP
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