Polymer Technology The generic chemical name for the class of polymers which are commerically known as nylons is Polyacrylate Polyamide Polyolefins Polyurathane Polyacrylate Polyamide Polyolefins Polyurathane 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 Low pressure Zeigler process of polythene manufacture Employs a pressure of 30 kgf/cm² Does not use any catalyst for polymerisation Achieves an yield of 95-98% based on ethylene Produces very low density polythene Employs a pressure of 30 kgf/cm² Does not use any catalyst for polymerisation Achieves an yield of 95-98% based on ethylene Produces very low density polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Magnitude of intermolecular forces Resistance to heat Polymerisation mechanism Molecular sizes Magnitude of intermolecular forces Resistance to heat Polymerisation mechanism Molecular sizes ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Solid Liquid Combination of solid & liquid Neither solid nor liquid Solid Liquid Combination of solid & liquid Neither solid nor liquid ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of Phenol formaldehyde resins Polyamides Polyesters Cross linked polystyrene Phenol formaldehyde resins Polyamides Polyesters Cross linked polystyrene ANSWER DOWNLOAD EXAMIANS APP
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