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 Elastometric Thermoplastic Thermosetting Brittleness Elastometric Thermoplastic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is Ni V₂O₅ Aluminium triethyl combined with titanium tetrachloride Fe Ni V₂O₅ Aluminium triethyl combined with titanium tetrachloride Fe ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural polymer? Polyisoprene Nucleic acids e.g. RNA and DNA Polysaccharides Polyurethane Polyisoprene Nucleic acids e.g. RNA and DNA Polysaccharides Polyurethane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition polymerisation is not involved in the manufacture of Polystyrene Poly vinyl chloride Low density polythene Polyhexamethylene adipamide Polystyrene Poly vinyl chloride Low density polythene Polyhexamethylene adipamide ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The only natural thermoplastic resin, which is a product of animal life is Shellac Rosin Copal Amber Shellac Rosin Copal Amber 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 7 kgf/cm² and 70 °C 1000 kgf/cm² and 100°C 7 kgf/cm² and 700°C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 70 °C 1000 kgf/cm² and 100°C 7 kgf/cm² and 700°C ANSWER DOWNLOAD EXAMIANS APP
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