Polymer Technology Lavatory cisterns are normally made of Expanded polystyrene Perspex Saturated polyester PVC Expanded polystyrene Perspex Saturated polyester PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically Polymethyl methacrylate (PMMA) Polycarbonates Phenolic resins Polytetraflouroethylene(PTFE) Polymethyl methacrylate (PMMA) Polycarbonates Phenolic resins Polytetraflouroethylene(PTFE) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Reduce its viscosity to permit easier processing Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce the time of vulcanisation and quantity of vulcanising agent ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers has the tendency of decomposing before melting? None of these Polystyrene PVC Nylon None of these Polystyrene PVC Nylon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosplastic materials None of these Are solvent insoluble Do not soften on application of heat Are heavily branched molecules None of these Are solvent insoluble Do not soften on application of heat Are heavily branched molecules ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? Rosin Phosphorous Carbon black Pine oil Rosin Phosphorous Carbon black Pine oil ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS