Polymer Technology Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Increase its viscosity Protect rubber goods from attack by oxygen & ozone present in the atmosphere Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Increase its viscosity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The synthetic fibres produced from __________ are known as rayon. Polyamides Cellulose Lignin Ethylene glycol Polyamides Cellulose Lignin Ethylene glycol ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Elastomers are Having very high tensile strength and heat resistance Having high flexural strength Thermosetting material Exemplified by protein derivatives Having very high tensile strength and heat resistance Having high flexural strength Thermosetting material Exemplified by protein derivatives ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten Saturated polyester Polyurathane Either B or C Polystyrene Saturated polyester Polyurathane Either B or C Polystyrene ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Which of the following additives are added to plastics to make it impervious to X-rays? Asbestos Phthalic acid Carborundum Barium salt Asbestos Phthalic acid Carborundum Barium salt ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polystyrene is a __________ plastic at room temperature. Ductile None of these Brittle Malleable Ductile None of these Brittle Malleable ANSWER DOWNLOAD EXAMIANS APP
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