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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 5
36.
__________ practically possess no elasticity.
Vulcanite or ebonite
Spandex fibre
Polysulphide rubber
Epoxy resin
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Phenol formaldehyde
employs addition polymerisation.
employs condensation polymerisation.
is a monomer.
is an abrasive material.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Polyesters are manufactured by the polycondensation reaction of
dibasic acid with dihydric alcohol.
a single monomer.
carboxylic acid with ethylene.
inorganic acid with ethylene glycol.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Thermosetting materials
are cross-linked molecules.
soften on application of heat.
are solvent soluble.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
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.
polyamides.
vinyl polymers.
urea-formaldehyde resins.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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