Polymer Technology The generic chemical name for the class of polymers which are commerically known as nylons is Polyolefins Polyacrylate Polyurathane Polyamide Polyolefins Polyacrylate Polyurathane Polyamide ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The monomer of poly vinyl chloride (PVC) is Chloroform Chloroethene Ethylene dichloride Ethyl chloride Chloroform Chloroethene Ethylene dichloride Ethyl chloride ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres. Rayon Polythene Polyvinyl acetate PVC Rayon Polythene Polyvinyl acetate PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Asbestos Phthalic acid Barium salt Carborundum Asbestos Phthalic acid Barium salt Carborundum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process of polythene manufacture Does not use any catalyst for polymerisation Achieves an yield of 95-98% based on ethylene Employs a pressure of 30 kgf/cm² Produces very low density polythene Does not use any catalyst for polymerisation Achieves an yield of 95-98% based on ethylene Employs a pressure of 30 kgf/cm² Produces very low density polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as Plasticisers Transparency improver Anti-shrinkage agents Hardeners Plasticisers Transparency improver Anti-shrinkage agents Hardeners ANSWER DOWNLOAD EXAMIANS APP
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