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Polymer Technology

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

Cellulose
Nylon
Dacron
None of these

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Polymer Technology
Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.

99
50
90
75

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Polymer Technology
Main constituent of cotton fibre is

Starch
Gelatine
Cellulose
Lignin

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

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Polymer Technology
The inter particle forces between linear chains in nylon-66 are __________ bonds.

Ionic
Covalant
None of these
Hydrogen

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Polymer Technology
Which of the following is not a natural polymer?

Polyurethane
Nucleic acids e.g. RNA and DNA
Polysaccharides
Polyisoprene

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