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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 2
31.
Condensation polymerisation of formaldehyde with __________ does not produce phenolic resin.
resorcinol
phenol
para-cresol
melamine
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Pick out the wrong statement.
Polystyrene is a thermoplastic polymer.
Protein is a natural polymer.
Neoprene is a natural rubber.
Polythene is a copolymer, while SBR is a homopolymer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Neoprene is rendered non-inflammable, because of
its cross-linked structure.
its linear chain structure.
the presence of chlorine atoms in its monomer.
the absence of chlorine atoms in its monomer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is
Ni
V2O5
Fe
aluminium triethyl combined with titanium tetrachloride
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as
hardeners
anti-shrinkage agents
plasticisers
transparency improver
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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