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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 3
21.
Thermosplastic materials
do not soften on application of heat.
are heavily branched molecules.
are solvent insoluble.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Polyvinyl acetate is never used for making
moulded articles
fibres
adhesives
all (a), (b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is
7 kgf/cm2 and 70 °C.
1000 kgf/cm2 and 100°C.
7 kgf/cm2 and 700°C.
1 kgf/cm2 (gage) and 70°C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Vulcanisation of rubber does not increase its
elasticity
plasticity
ductility
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
In nylon-6, the number 6 represents the total number of
carbon atoms in the ring.
carbon atoms in the linear polymer chain.
nitrogen atoms in the ring.
hydrogen atoms in the ring.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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