Chapter : 15.
POLYMERS
Level-1:Questions
1) What are polymers?
A: These are referred to as Macromolecules which are formed
by joining of repeating structural units on a large scale.
2) Give two examples
each of natural and of synthetic polymers.
A: Natural polymers e.g.:- proteins, starch Synthetic
polymers e.g.:- Polythene, Nylon-6,6
3) What are biodegradeable polymers? Give one example.
A: Polymers which are
degraded easily by environmental processes. e.g.: PHBV
4) How are the polymer classified on the basis of structure?
A: They are three types based on the structure of polymers
a) Linear polymers b) branched polymers c) cross linked polymers.
5) Define the term
‘polymerisation’.
A: The process of making polymer from monomers.
6) What are the monomers for the following polymers: i)
Polythene ii) PVC iii) Teflon iv) Polystyrene
A: i) Ethene ii) Vinyl chloride iii) Tetrafluoroethene
iv)Styrene
7) In which classes, the polymers are classified on the
basis of molecular forces?
A: Elastomers,
Fibres, thermoplastic and thermosetting polymers
8) Give an example of elastomer.
A: Neoprene
9) Identify the
polymer. -A-A-A-A-AA:
Homopolymer
10)Define the term ”
homopolymerisation”.
A: The process of
making polymer by adding one kind of monomers
11) Identify the polymer. -A-B-A-B-A-B-A-BA:
Copolymer
12) Why rubbers are called “Elastomers”?
A: They can be stretched and retract to its original
position after the release of force.
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