Polymer Technology
Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.

Glycol soaking
Dyeing/colouring
Detergent solution washing
Improving the stretchability

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

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

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