Chemical Engineering :: Polymer Technology
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Pickout the wrong statement.
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The only natural thermoplastic resin, which is a product of animal life is
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Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?
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__________ practically possess no elasticity.
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Phenol formaldehyde
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Polyesters are manufactured by the polycondensation reaction of
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Thermosetting materials
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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
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A.
Polymers made of only one monomer is called homopolymer.
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B.
Polymers made of more than one monomer is called copolymer or mixed polymer.
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C.
Vulcanised rubber is more elastic than natural rubber.
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D.
The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres.
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