Polymer Technology Polyesters are manufactured by the polycondensation reaction of Inorganic acid with ethylene glycol Carboxylic acid with ethylene Dibasic acid with dihydric alcohol A single monomer Inorganic acid with ethylene glycol Carboxylic acid with ethylene Dibasic acid with dihydric alcohol A single monomer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The main use of butadiene is As an anti-skimming agent in paint None of these In the manufacture of synthetic rubber As a plasticiser for unsaturated polyester As an anti-skimming agent in paint None of these In the manufacture of synthetic rubber As a plasticiser for unsaturated polyester ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Bakelite is a/an Elastomer Addition polymer None of these Thermoplastic Elastomer Addition polymer None of these Thermoplastic ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? Potassium alum Neither A nor B Ammonium alum Both A & B Potassium alum Neither A nor B Ammonium alum Both A & B ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Zeigler - Natta catalyst (AlR₃ - AlCl₃) is used in the polymerisation of Vinyl chloride Vinyl acetate Propylene Styrene Vinyl chloride Vinyl acetate Propylene Styrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce its viscosity to permit easier processing Reduce the time of vulcanisation and quantity of vulcanising agent Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity ANSWER DOWNLOAD EXAMIANS APP
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