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Polymer Technology

Polymer Technology
Main constituent of natural rubber is

Polystyrene
Polyisoprene
Poly chloroprene
Polybutadiene

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Polymer Technology
The generic chemical name for the class of polymers which are commerically known as nylons is

Polyolefins
Polyurathane
Polyamide
Polyacrylate

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Polymer Technology
Thermoplastic resins usually

Can not be reclaimed from waste
Remain hard as long as they are hot
Permanent setting resins
Less brittle than thermosetting resins

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Polymer Technology
Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.

Urea formaldehyde
Phenol formaldehyde
Melamine formaldehyde
Epoxy

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Polymer Technology
In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer?

Buna-S
PMMA
PTFE
Polycaprolactum

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Polymer Technology
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of

Siloxane elastomers
Urea-formaldehyde resins
Vinyl polymers
Polyamides

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