Polymer Technology Polymers are None of these Micromolecules Macromolecules Sub-micromolecules None of these Micromolecules Macromolecules Sub-micromolecules ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not an elastomer? Neoprene Polyisoprene Nitrile-butadiene None of these Neoprene Polyisoprene Nitrile-butadiene None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Does not need any catalyst Does not produce linear polymers Produces epoxy polymers Produces only thermoplastic material Does not need any catalyst Does not produce linear polymers Produces epoxy polymers Produces only thermoplastic material 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 Styrene butadiene rubber (SBR) as compared to natural rubber has All of these Greater amount of heat build up heavy loading Poor tensile strength Poorer resistance All of these Greater amount of heat build up heavy loading Poor tensile strength Poorer resistance ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is a polymer of hexamethylene diamine and adipic acid? Nylon-6, 10 Nylon-6 Nylon-66 Epoxy resin Nylon-6, 10 Nylon-6 Nylon-66 Epoxy resin ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS