Polymer Technology Nylon 6 as compared to nylon 6, 6 has lower Thermal stability Hardness Abrasion resistance Adhesion to rubber Thermal stability Hardness Abrasion resistance Adhesion to rubber ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to 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 Increase its viscosity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature. Polyacrylonitrile Polypropylene Nylon Polyester Polyacrylonitrile Polypropylene Nylon Polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of Vinyl acetate Vinyl chloride Styrene Propylene Vinyl acetate Vinyl chloride Styrene Propylene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is generally not used as eord for synthetic rubber tyre casing? Nylon None of these Cellulose Dacron Nylon None of these Cellulose Dacron 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? 51600 49200 50800 50000 51600 49200 50800 50000 ANSWER DOWNLOAD EXAMIANS APP
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