Polymer Technology Poly tetra flouro ethylene (PTFE) is known as Dacron Celluloid Bakelite Teflon Dacron Celluloid Bakelite Teflon 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. -20 to 25 100 to 150 250-280 50 to 75 -20 to 25 100 to 150 250-280 50 to 75 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. Brittle Malleable None of these Ductile Brittle Malleable None of these Ductile ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl chloride (PVC) Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Softening temperature is 200°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Resistance to heat Magnitude of intermolecular forces Molecular sizes Polymerisation mechanism Resistance to heat Magnitude of intermolecular forces Molecular sizes Polymerisation mechanism ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Visco-elastic behaviour exhibited by plastics is a __________ like behaviour. Neither solid nor liquid Liquid Solid Combination of solid & liquid Neither solid nor liquid Liquid Solid Combination of solid & liquid ANSWER DOWNLOAD EXAMIANS APP
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