Polymer Technology Which of the following is not a thermoplastic material? Polythene Epoxy polymer Polystyrene PVC Polythene Epoxy polymer Polystyrene PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Viscosity of a polymer solution or melt Increases with increase in temperature Does not vary with temperature rise Decreases with increase in temperature Decreases with increase in molecular weight Increases with increase in temperature Does not vary with temperature rise Decreases with increase in temperature Decreases with increase in molecular weight ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? Ammonium alum Neither A nor B Both A & B Potassium alum Ammonium alum Neither A nor B Both A & B Potassium alum ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The generic chemical name for the class of polymers which are commerically known as nylons is Polyurathane Polyamide Polyolefins Polyacrylate Polyurathane Polyamide Polyolefins Polyacrylate ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene which is a monomer for the production of polystyrene, is commercially produced by the Catalytic dehydrogenation of ethyl benzene Reacting ethylene oxide with acetal-dehyde Fermentation of starch Dehydration of ethyl alcohol followed by hydrogenation Catalytic dehydrogenation of ethyl benzene Reacting ethylene oxide with acetal-dehyde Fermentation of starch Dehydration of ethyl alcohol followed by hydrogenation ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties. Thermosetting Elastometric Brittleness Thermoplastic Thermosetting Elastometric Brittleness Thermoplastic ANSWER DOWNLOAD EXAMIANS APP
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