Polymer Technology Synthetic rubber Is brittle at low temperature Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Deforms, if stretched to double of its original dimension Is softer at higher temperature Is brittle at low temperature Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases Deforms, if stretched to double of its original dimension Is softer at higher temperature ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Epoxy resins (i.e., epoxide polymers) Are cross-linked polymers only Contain an epoxy group ( ##### ) at the ends of the polymer Are made by addition polymerisation reaction only Use emulsion polymerisation methods Are cross-linked polymers only Contain an epoxy group ( ##### ) at the ends of the polymer Are made by addition polymerisation reaction only Use emulsion polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyurathane can not be used for making Coating material Bottles Mattresses & foam Adhesives Coating material Bottles Mattresses & foam Adhesives ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of polymers are in the range of 10⁷-10⁹ 10 to 10³ 10²-10⁷ 10⁹-10¹¹ 10⁷-10⁹ 10 to 10³ 10²-10⁷ 10⁹-10¹¹ ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically Polytetraflouroethylene(PTFE) Polycarbonates Phenolic resins Polymethyl methacrylate (PMMA) Polytetraflouroethylene(PTFE) Polycarbonates Phenolic resins Polymethyl methacrylate (PMMA) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C. -5 250-280 10-30 500-600 -5 250-280 10-30 500-600 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS