Polymer Technology Styrene butadiene rubber (SBR) as compared to natural rubber has Poor tensile strength Poorer resistance 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 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 50000 49200 50800 51600 50000 49200 50800 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosetting polymers as compared to thermoplastic polymers Are formed by addition polymerisation Have three dimensional structure Have linear structure None of these Are formed by addition polymerisation Have three dimensional structure Have linear structure None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Thiokol Carbon Magnesium Alkylated diphenyl amine Thiokol Carbon Magnesium Alkylated diphenyl amine ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plasticisers are added to synthetic plastics to All of these Improve workability during fabrication Develop new improved properties not present in the original resin Impart flexibility All of these Improve workability during fabrication Develop new improved properties not present in the original resin Impart flexibility ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene butadiene rubber is commercially manufactured by Emulsion polymerisation Suspension polymerisation Solution polymerisation Bulk polymerisation Emulsion polymerisation Suspension polymerisation Solution polymerisation Bulk polymerisation ANSWER DOWNLOAD EXAMIANS APP
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