Polymer Technology Viscosity of a polymer solution or melt Decreases with increase in temperature Does not vary with temperature rise Increases with increase in temperature Decreases with increase in molecular weight Decreases with increase in temperature Does not vary with temperature rise Increases with increase in temperature Decreases with increase in molecular weight 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 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 Reduce its viscosity to permit easier processing ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Synthetic polymer produced by using terephthalic acid and ethylene glycol is Polyesterene Nylon-66 Terylene PVC Polyesterene Nylon-66 Terylene PVC ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Bakelite is An inorganic polymer Same as thermoset phenol formaldehyde Same as polytetra flouro ethylene (PTFE) Not a polymer An inorganic polymer Same as thermoset phenol formaldehyde Same as polytetra flouro ethylene (PTFE) Not a polymer 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 2:1 1:2 3:1 1:3 2:1 1:2 3:1 ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? Magnesium Alkylated diphenyl amine Carbon Thiokol Magnesium Alkylated diphenyl amine Carbon Thiokol ANSWER DOWNLOAD EXAMIANS APP
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