Polymer Technology
The rate controlling step in the manufacture of silicone rubber is the

Condensation of siloxane to silicone
Initial hydrolysis of silicone monomer
None of these
Polymer termination step

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Polymer Technology
Thermocole (expanded polystyrene) is not used for

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

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