Polymer Technology
The main use of butadiene is

In the manufacture of synthetic rubber
As a plasticiser for unsaturated polyester
None of these
As an anti-skimming agent in paint

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Polymer Technology
Thermocole (expanded polystyrene) is not used for

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

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