Polymer Technology Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? Carbon black Pine oil Rosin Phosphorous Carbon black Pine oil Rosin Phosphorous ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Linear polymers are normally Elastometric Having extremely high softening point Thermosetting Thermosplastic Elastometric Having extremely high softening point Thermosetting Thermosplastic 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 Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity Reduce the time of vulcanisation and quantity of vulcanising agent Reduce its viscosity to permit easier processing Protect rubber goods from attack by oxygen & ozone present in the atmosphere Increase its viscosity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins. Melamine formaldehyde Urea formaldehyde Phenol formaldehyde Epoxy Melamine formaldehyde Urea formaldehyde Phenol formaldehyde Epoxy ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology The process involved in converting rubber into a thin sheet or coating it on fabric is called Mastication Calendering Vulcanisation Extrusion Mastication Calendering Vulcanisation Extrusion ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymerisation of poly functional monomers produces polymers having Low viscosity Low melting point Good machanical strength None of these Low viscosity Low melting point Good machanical strength None of these ANSWER DOWNLOAD EXAMIANS APP
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