Polymer Technology
Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.

75
50
90
99

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Polymer Technology
Pick out the wrong statement regarding the solubility characteristics of high polymers.

Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent
High molecul ar weight polymers on dissolving gives solution of very low viscosity
Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents
Greater the degree of cross-linking in the polymer, lesser is its solubility

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Polymer Technology
Elastomers are

Having very high tensile strength and heat resistance
Having high flexural strength
Thermosetting material
Exemplified by protein derivatives

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