Polymer Technology Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is 7 kgf/cm² and 70 °C 7 kgf/cm² and 700°C 1000 kgf/cm² and 100°C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 70 °C 7 kgf/cm² and 700°C 1000 kgf/cm² and 100°C 1 kgf/cm² (gage) and 70°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cation exchange resins used in water treatment is made from __________ resin. Phenolic Epoxy Urea formaldehyde Amino Phenolic Epoxy Urea formaldehyde Amino 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. PVC Polyvinyl acetate Rayon Polythene PVC Polyvinyl acetate Rayon Polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are 0°C and 3 kgf/cm² - 20°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 1 kgf/cm² 0°C and 3 kgf/cm² - 20°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6. -20 to 25 50 to 75 250-280 100 to 150 -20 to 25 50 to 75 250-280 100 to 150 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following rubbers has the widest service temperature range (-75 to 275°C) ? Butyl rubber Silicon rubber Nitrile rubber Silicone rubber Butyl rubber Silicon rubber Nitrile rubber Silicone rubber ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS