Polymer Technology Thermosetting polymers as compared to thermoplastic polymers Are formed by addition polymerisation Have linear structure None of these Have three dimensional structure Are formed by addition polymerisation Have linear structure None of these Have three dimensional structure ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are added to synthetic plastics to Develop new improved properties not present in the original resin All of these Impart flexibility Improve workability during fabrication Develop new improved properties not present in the original resin All of these Impart flexibility Improve workability during fabrication ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at 1:2 3:1 1:3 2:1 1:2 3:1 1:3 2:1 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? Esters of phthalic acid Ethylene glycol Tricresyl phosphate Stearic acid estors Esters of phthalic acid Ethylene glycol Tricresyl phosphate Stearic acid estors ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is Polyvinyl acetale PVC Polyvinyl butyral Polyvinyl alcohol Polyvinyl acetale PVC Polyvinyl butyral Polyvinyl alcohol 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. 50 to 75 100 to 150 250-280 -20 to 25 50 to 75 100 to 150 250-280 -20 to 25 ANSWER DOWNLOAD EXAMIANS APP
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