Polymer Technology In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer? Polycaprolactum Buna-S PMMA PTFE Polycaprolactum Buna-S PMMA PTFE ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at 1:3 3:1 2:1 1:2 1:3 3:1 2:1 1:2 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 Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce its viscosity to permit easier processing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following is not a natural polymer? Polyisoprene Polysaccharides Nucleic acids e.g. RNA and DNA Polyurethane Polyisoprene Polysaccharides Nucleic acids e.g. RNA and DNA Polyurethane ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polyvinyl alcohol is used as a Non-sticky coating on frying pans Water soluble adhesive Textile fibre Cation/anion exchanger Non-sticky coating on frying pans Water soluble adhesive Textile fibre Cation/anion exchanger ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following polymers belong to the class of formaldehyde resin? Melamine resins Dacron Teflon None of these Melamine resins Dacron Teflon None of these ANSWER DOWNLOAD EXAMIANS APP
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