Polymer Technology
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to

Increase its viscosity
Reduce the time of vulcanisation and quantity of vulcanising agent
Protect rubber goods from attack by oxygen & ozone present in the atmosphere
Reduce its viscosity to permit easier processing

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Polymer Technology
Pickout the wrong statement.

Polymers made of more than one monomer is called copolymer or mixed polymer
Vulcanised rubber is more elastic than natural rubber
The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres
Polymers made of only one monomer is called homopolymer

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