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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 4
36.
Ebonite is a/an
highly vulcanised rubber.
natural rubber.
unvulcanised raw rubber.
adhesive.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Elastomers are
thermosetting material.
exemplified by protein derivatives.
having high flexural strength.
having very high tensile strength and heat resistance.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which of the following additives are added to plastics to make it impervious to X-rays ?
Asbestos
Barium salt
Carborundum
Phthalic acid
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Paper like thin plastic articles can be produced by
blow moulding
vacuum thermo forming
injection moulding
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.
organic peroxides
sulphuric acid
hydroflouric acid
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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