Polymer Technology Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent. 90 75 50 99 90 75 50 99 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Epoxy resins (i.e., epoxide polymers) Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only Use emulsion polymerisation methods Are made by addition polymerisation reaction only Contain an epoxy group ( ##### ) at the ends of the polymer Are cross-linked polymers only Use emulsion polymerisation methods Are made by addition polymerisation reaction only ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Viscosity of a polymer solution or melt Does not vary with temperature rise Decreases with increase in temperature Increases with increase in temperature Decreases with increase in molecular weight Does not vary with temperature rise Decreases with increase in temperature Increases with increase in temperature Decreases with increase in molecular weight ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is an inorganic polymer? Perspex Bakelite Silicones Teflon Perspex Bakelite Silicones Teflon ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Molecular weight of a polymer is equal to the molecular weight of the repeat unit multiplied by the degree of polymerisation. What is the molecular weight of poly vinyl chloride (PVC), if its degree of polymerisation is 800? 51600 50000 49200 50800 51600 50000 49200 50800 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer? PMMA PTFE Polycaprolactum Buna-S PMMA PTFE Polycaprolactum Buna-S ANSWER DOWNLOAD EXAMIANS APP
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