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Polymer Technology

Polymer Technology
Vinyl flooring is done using __________ sheets.

Polypropylene
PVC
Polythene
Polyvinyl acetate

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Polymer Technology
Condensation polymerisation of __________ produces bakelite.

Phenol & formaldehyde
Urea & formaldehyde
Phenol & acetaldehyde
Propylene

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Polymer Technology
Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used

As plasticiser for PVC & nitrocellulose
For film forming materials
For fibre making
For surface coating of automobiles & air crafts

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

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

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Polymer Technology
The monomer of natural rubber is

2 methyl-1-propene
DMT
Isoprene
Both B and C

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Polymer Technology
Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.

50 to 75
250-280
100 to 150
-20 to 25

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