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Polymer Technology

Polymer Technology
__________ polythene is most prone to stress-cracking

Linear low density
High density
Cross-linked
Low density

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Polymer Technology
Polycaprolactum is nothing but

Nylon 6
Orlon
Nylon 6, 6
Saran

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

Alkyd resins
Unsaturated polyester
Amino resins
Saturated polyester

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

250°C and 10 kgf/cm²
50°C and 1 kgf/cm²
50°C and 3 - 4 kg/cm²
250°C and 1 kgf/cm²

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Polymer Technology
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?

Bakelite
Epoxy resin
PVC
PTFE

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Polymer Technology
Density of low density polythene is about __________ gm/c.c.

0.91
0.56
0.81
0.38

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