Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Phthalic acid Asbestos Carborundum Barium salt Phthalic acid Asbestos Carborundum Barium salt ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Is produced by polycondensation reaction Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods Is produced by polycondensation reaction Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Uses either emulsion or suspension polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology __________ is an addition polymer Polythene Nylon None of these Bakelite Polythene Nylon None of these Bakelite ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is Isoprene None of these Chlorophrene Chloroethane Isoprene None of these Chlorophrene Chloroethane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermoplastic resins usually Can not be reclaimed from waste Permanent setting resins Less brittle than thermosetting resins Remain hard as long as they are hot Can not be reclaimed from waste Permanent setting resins Less brittle than thermosetting resins Remain hard as long as they are hot ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of polymers are in the range of 10⁹-10¹¹ 10⁷-10⁹ 10²-10⁷ 10 to 10³ 10⁹-10¹¹ 10⁷-10⁹ 10²-10⁷ 10 to 10³ ANSWER DOWNLOAD EXAMIANS APP
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