Polymer Technology
Thermocole (expanded polystyrene) is not used for

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

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Polymer Technology
Dacron is a

Thermosetting material
Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol
None of these
Condensation polymerisation product of hexamethylene diamine and adipic acid

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