Polymer Technology
Nylon-66 compared to nylon-6 has

All of these
Higher hardness
More abrasion resistant properties
Lower melting point

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Polymer Technology
Identify the group in which all the polymers mentioned can be used to make fibres.

Cellulose derivatives, Polyisoprene, Polyethylene
Polypropylene, Poly vinyl chloride, Silicon
Butadiene copolymers, Polyamides, Urea aldehyde
Cellulose derivatives, Polyamides, Polyurathane

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