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Polymer Technology

Polymer Technology
The synthetic fibres produced from __________ are known as rayon.

Ethylene glycol
Cellulose
Lignin
Polyamides

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Polymer Technology
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an

Spongy rubber
Engineering plastic
Rigid foam
Thermosetting polymer

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Polymer Technology
Nylon-6 as compared to nylon-66 is

None of these
Having higher melting point
More abrasion resistant
Harder

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Polymer Technology
Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding

Glycerol
None of these
Camphor
Nitro cellulose

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Polymer Technology
Which of the following is generally not used as eord for synthetic rubber tyre casing?

None of these
Nylon
Dacron
Cellulose

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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.

Acrylic
Polyester
Polypropylene
Nylon 6:6

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