Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Nylon-66 is manufactured from Dimethyl terephthalate (DMT) and ethylene glycol Caprolactum Adipic acid and hexamenthylene diamine Maleic anhydride and hexamethylene diamine Dimethyl terephthalate (DMT) and ethylene glycol Caprolactum Adipic acid and hexamenthylene diamine Maleic anhydride and hexamethylene diamine ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Main constituent of cotton fibre is Gelatine Lignin Starch Cellulose Gelatine Lignin Starch Cellulose ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Pickout the wrong statement. Polymers made of more than one monomer is called copolymer or mixed polymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Polymers made of only one monomer is called homopolymer Polymers made of more than one monomer is called copolymer or mixed polymer Vulcanised rubber is more elastic than natural rubber The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres Polymers made of only one monomer is called homopolymer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is 1000 kgf/cm² and 100°C 7 kgf/cm² and 70 °C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 700°C 1000 kgf/cm² and 100°C 7 kgf/cm² and 70 °C 1 kgf/cm² (gage) and 70°C 7 kgf/cm² and 700°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosplastic materials Are solvent insoluble Are heavily branched molecules None of these Do not soften on application of heat Are solvent insoluble Are heavily branched molecules None of these Do not soften on application of heat ANSWER DOWNLOAD EXAMIANS APP