Polymer Technology Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene. Nitrile Butyl Silicone Neoprene Nitrile Butyl Silicone Neoprene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals. Sulphuric acid Organic peroxides Hydroflouric acid None of these Sulphuric acid Organic peroxides Hydroflouric acid None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The major component of acrylic fibres is Polyolefins Polyamides Polyacrylonitrile Polyesters Polyolefins Polyamides Polyacrylonitrile Polyesters ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is Bakelite Polyester Teflon Nylon-66 Bakelite Polyester Teflon Nylon-66 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Starting material for the production of SBR is Neither A nor B Both A & B Ethylene Ethyl alcohol Neither A nor B Both A & B Ethylene Ethyl alcohol ANSWER DOWNLOAD EXAMIANS APP
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