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Polymer Technology

Polymer Technology
A copolymer of vinyl and vinylidine chloride is called

Saran
Orlon
Treylene
Dacron

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Polymer Technology
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).

Saturated polyester
Amino resins
Unsaturated polyester
Alkyd resins

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

Nickel
Aluminium triethyl activated with TiCl₄
Platinum
Molybdenum

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Polymer Technology
Collapsible tubes for tooth paste are produced by __________ extrusion.

None of these
Direct
Indirect
Impact

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Polymer Technology
Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.

Nylon 6:6
Polypropylene
Acrylic
Polyester

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Polymer Technology
Poly Vinyl chloride (PVC) is a __________ material.

Thermoplastic
Chemically active
Fibrous
Thermosetting

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