Polymer Technology Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of __________ percent. 1500-2000 1-1000 1000-1500 2000-2500 1500-2000 1-1000 1000-1500 2000-2500 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 Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are 50°C and 1 kgf/cm² 50°C and 3 - 4 kg/cm² 250°C and 10 kgf/cm² 250°C and 1 kgf/cm² 50°C and 1 kgf/cm² 50°C and 3 - 4 kg/cm² 250°C and 10 kgf/cm² 250°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermoplastic resins usually Can not be reclaimed from waste Permanent setting resins Remain hard as long as they are hot Less brittle than thermosetting resins Can not be reclaimed from waste Permanent setting resins Remain hard as long as they are hot Less brittle than thermosetting resins ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Dacron (or terylene) fibres as compared to nylon fibres have Better heat & acid resistant properties All of these Poorer resistance to alkalis Poorer dyeability Better heat & acid resistant properties All of these Poorer resistance to alkalis Poorer dyeability ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a polyolefin? Neoprene Polystyrene Polypropylene None of these Neoprene Polystyrene Polypropylene None of these ANSWER DOWNLOAD EXAMIANS APP
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