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 Brittleness Thermoplastic Elastometric Thermosetting Brittleness Thermoplastic Elastometric ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800? 49200 51600 50000 50800 49200 51600 50000 50800 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The process involved in converting rubber into a thin sheet or coating it on fabric is called Vulcanisation Mastication Extrusion Calendering Vulcanisation Mastication Extrusion Calendering ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is 1 kgf/cm² (gage) and 70°C 1000 kgf/cm² and 100°C 7 kgf/cm² and 700°C 7 kgf/cm² and 70 °C 1 kgf/cm² (gage) and 70°C 1000 kgf/cm² and 100°C 7 kgf/cm² and 700°C 7 kgf/cm² and 70 °C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ polythene is most prone to stress-cracking High density Linear low density Low density Cross-linked High density Linear low density Low density Cross-linked ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Branched chain polymers compared to linear polymers have higher Density Tensile strength Melting point Degree of irregularity in atomic packing Density Tensile strength Melting point Degree of irregularity in atomic packing ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS