Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Asbestos Carborundum Barium salt Phthalic acid Asbestos Carborundum Barium salt Phthalic acid 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) Polymethyl methacrylate (PMMA) Polycarbonates Phenolic resins Polytetraflouroethylene(PTFE) Polymethyl methacrylate (PMMA) Polycarbonates Phenolic resins ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Does not produce linear polymers Does not need any catalyst Produces epoxy polymers Produces only thermoplastic material Does not produce linear polymers Does not need any catalyst Produces epoxy polymers Produces only thermoplastic material ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers is used for making a non stick coating on frying pans? Perspex Bakelite Teflon PVC Perspex Bakelite Teflon PVC 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
Polymer Technology __________ practically possess no elasticity. Vulcanite or ebonite Polysulphide rubber Spandex fibre Epoxy resin Vulcanite or ebonite Polysulphide rubber Spandex fibre Epoxy resin ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS