Polymer Technology Polyvinyl chloride (PVC) Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Softening temperature is 200°C Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Is produced by polycondensation reaction Softening temperature is 200°C ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cellulose is the main contituent of most __________ fibres. Spandex Acrylic Synthetic Natural Spandex Acrylic Synthetic Natural ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher Hardness, rigidity & brittleness Melting point Tensile strength Densities Hardness, rigidity & brittleness Melting point Tensile strength Densities ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is a copolymer? Teflon Bakelite PVC Polythene Teflon Bakelite PVC Polythene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Orlan fibre which is used as a wool sub stitute is Polymethylmethacrylate (PMMA) Polyacrylonitrile A natural polymeric fibre An amorphous polymer Polymethylmethacrylate (PMMA) Polyacrylonitrile A natural polymeric fibre An amorphous polymer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Properties of a polymer is affected by the All of these Intermolecular forces Chain length Branching & cross-linking All of these Intermolecular forces Chain length Branching & cross-linking ANSWER DOWNLOAD EXAMIANS APP
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