Polymer Technology __________ polymer is used for making unbreakable crockery. Melamine None of these Thermoplastic Addition Melamine None of these Thermoplastic Addition ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Addition of stabiliser during PVC manufacture is done to Prevent its thermal degradation Improve its impact strength Reduce the melt viscosity & glass transition temperature Improve its elasticity Prevent its thermal degradation Improve its impact strength Reduce the melt viscosity & glass transition temperature Improve its elasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically Phenolic resins Polytetraflouroethylene(PTFE) Polycarbonates Polymethyl methacrylate (PMMA) Phenolic resins Polytetraflouroethylene(PTFE) Polycarbonates Polymethyl methacrylate (PMMA) ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%) ? Polythene Water impermeable cellophane Cellulose acetate Teflon Polythene Water impermeable cellophane Cellulose acetate Teflon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Branched chair polymers as compared to linear polymers have Higher melting point Lower density Higher tensile strength None of these Higher melting point Lower density Higher tensile strength None of these ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce its viscosity to permit easier processing ANSWER DOWNLOAD EXAMIANS APP
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