Polymer Technology Buna-N is also called Neoprene Thiokol Nitrile rubber Butyl rubber Neoprene Thiokol Nitrile rubber Butyl rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent. 1000-1500 1-1000 2000-2500 1500-2000 1000-1500 1-1000 2000-2500 1500-2000 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? Ethylene glycol Esters of phthalic acid Stearic acid estors Tricresyl phosphate Ethylene glycol Esters of phthalic acid Stearic acid estors Tricresyl phosphate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture 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 Does not use any catalyst for polymerisation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The process involved in converting rubber into a thin sheet or coating it on fabric is called Calendering Mastication Extrusion Vulcanisation Calendering Mastication Extrusion Vulcanisation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ tubes are good substitude for human blood vessels onrheart by-pass operation. Polystyrene Polythene PVC Teflon/dacron Polystyrene Polythene PVC Teflon/dacron ANSWER DOWNLOAD EXAMIANS APP
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