Polymer Technology
Catalyst used in the production of high density polythene by low pressure Ziegler process is

Platinum
Aluminium triethyl activated with TiCl₄
Nickel
Molybdenum

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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
Accoustic control and ceiling for building
Packing of delicate electronic gadgets

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Polymer Technology
Elastomers are

Exemplified by protein derivatives
Having high flexural strength
Having very high tensile strength and heat resistance
Thermosetting material

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