Polymer Technology Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as Hardeners Transparency improver Plasticisers Anti-shrinkage agents Hardeners Transparency improver Plasticisers Anti-shrinkage agents ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Size range of polymer molecules varies from __________ metre. 10⁻⁸ to 10⁻¹⁰ 10⁻⁴ to 10⁻⁷ 10⁻² to 10⁻⁵ 10⁻¹ to 10⁻² 10⁻⁸ to 10⁻¹⁰ 10⁻⁴ to 10⁻⁷ 10⁻² to 10⁻⁵ 10⁻¹ to 10⁻² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural polymer? Nucleic acids e.g. RNA and DNA Polysaccharides Polyurethane Polyisoprene Nucleic acids e.g. RNA and DNA Polysaccharides Polyurethane Polyisoprene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polycondensation reaction of polymerisation Does not produce linear polymers Produces epoxy polymers Does not need any catalyst Produces only thermoplastic material Does not produce linear polymers Produces epoxy polymers Does not need any catalyst Produces only thermoplastic material 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 50800 49200 50000 51600 50800 49200 50000 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Vinyl flooring is done using __________ sheets. Polyvinyl acetate PVC Polypropylene Polythene Polyvinyl acetate PVC Polypropylene Polythene ANSWER DOWNLOAD EXAMIANS APP
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