Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Softening temperature is 200°C Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Dacron (or terylene) fibres as compared to nylon fibres have All of these Better heat & acid resistant properties Poorer resistance to alkalis Poorer dyeability All of these Better heat & acid resistant properties Poorer resistance to alkalis Poorer dyeability ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Buna-S is a __________ material. Plastic Resinous Fibrous Rubbery Plastic Resinous Fibrous Rubbery ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Branched chain polymers compared to linear polymers have higher Density Melting point Degree of irregularity in atomic packing Tensile strength Density Melting point Degree of irregularity in atomic packing Tensile strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of Cross linked polystyrene Phenol formaldehyde resins Polyamides Polyesters Cross linked polystyrene Phenol formaldehyde resins Polyamides Polyesters ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers does not belong to the class of polyacrylate polymer? Polyacrylonitrile PMMA None of these Polyethyl acrylate Polyacrylonitrile PMMA None of these Polyethyl acrylate ANSWER DOWNLOAD EXAMIANS APP
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