Polymer Technology
Orlan fibre which is used as a wool sub stitute is

An amorphous polymer
Polymethylmethacrylate (PMMA)
Polyacrylonitrile
A natural polymeric fibre

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Polymer Technology
Thermocole (expanded polystyrene) is not used for

High temperature thermal insulation in furnaces
Low temperature thermal insulation as in refrigerator and air conditioners
Packing of delicate electronic gadgets
Accoustic control and ceiling for building

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