Polymer Technology
Thermocole (expanded polystyrene) is not used for

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

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Polymer Technology
Dacron is a

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

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