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Polymer Technology

Polymer Technology
Linear polymers are normally

Thermosetting
Having extremely high softening point
Elastometric
Thermosplastic

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Polymer Technology
Flexible foam (for mattresses) are usually made of

PVC
Polyamides
Silicone rubber
Polyurethanes

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Polymer Technology
Ebonite is a/an

Natural rubber
Unvulcanised raw rubber
Adhesive
Highly vulcanised rubber

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Polymer Technology
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are

0°C and 1 kgf/cm²
5°C and 1 kgf/cm²
0°C and 3 kgf/cm²
- 20°C and 1 kgf/cm²

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Polymer Technology
Addition of stabiliser during PVC manufacture is done to

Prevent its thermal degradation
Improve its impact strength
Reduce the melt viscosity & glass transition temperature
Improve its elasticity

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Polymer Technology
Polyhexamethylene adipimide is also known as

Epoxy resin
Nylon-66
Silicone rubber
Bakelite

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MORE MCQ ON Polymer Technology

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