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Polymer Technology

Polymer Technology
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about __________ ° C.

-20
250
500
50

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Polymer Technology
Buna-S is a __________ material.

Fibrous
Rubbery
Resinous
Plastic

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Polymer Technology
Size range of polymer molecules varies from __________ metre.

10⁻⁸ to 10⁻¹⁰
10⁻² to 10⁻⁵
10⁻¹ to 10⁻²
10⁻⁴ to 10⁻⁷

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

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Polymer Technology
Polycaprolactum is nothing but

Nylon 6, 6
Orlon
Nylon 6
Saran

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Polymer Technology
__________ moulding is used for shaping of thermosetting plastics exclusively.

Extrusion
Compression
Injection
Transfer

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