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1.	Define polymer.
Answer» Polymer is dened as very large molecules having molecular mass (10^3-10⁷ u). These are also referred to as macromolecules.

Discussion

2.	Define a copolymer.
Answer» The polymers made by addition polymerisation from two different monomers are termed as copolymers. E.g., Buna-S, Buna-N etc.

Discussion

3.	Write one use of PVC.
Answer» In manufacture of raincoats and vinyl flooring.

Discussion

4.	Define the term homopolymerisation giving an example.
Answer» The polymer formed by the polymerization of single/same monomeric species is known as homopolymerisation. E.g., Polythene/PVC/Polypropene.

Discussion

5.	(i) What is the role of t-butyl peroxide in the polymerisation of ethane ?(ii) Identify the monomers in the following polymer :(iii) Arrange the following polymers in the increasing order of their intermolecular forces : Polystyrene, Terylene, Buna-S
Answer» (i) Catalyst/initiator of free radical (ii) Hexamethylenediamine and adipic acid (iii) Buna-S < Polystyrene < Terylene

Discussion

6.	Give an example of thermoplastics.
Answer» Thermoplastics are polythene, polystyrene, polyvinyls etc.

Discussion

7.	Name the type of monomers in terylene.
Answer» Ethylene glycol and terephthalic acid.

Discussion

8.	Write name of a synthetic polymer which is an ester.
Answer» The correct answer is Terylene.

Discussion

9.	Name a natural elastomer.
Answer» Natural rubber.

Discussion

10.	Can a copolymer be formed in both addition and condensation polymerisation ? Explain with examples.
Answer» Yes. Buna-S, Buna-N : Addition polymer Nylon-6, 6, terylene : Condensation

Discussion

11.	To which class of polymers does Nylon-66 belong ?
Answer» The correct answer is Polyamides.

Discussion

12.	In which classes, the polymers are classified on the basis of molecular forces?
Answer» On the basis of magnitude of intermolecular forces present in polymers, they are classified into the following groups: (i) Elastomers (ii) Fibres (iii) Thermoplastic polymers (iv) Thermosetting polymers

12.

In which classes, the polymers are classified on the basis of molecular forces?

Answer»

On the basis of magnitude of intermolecular forces present in polymers, they are classified
into the following groups:
(i) Elastomers
(ii) Fibres
(iii) Thermoplastic polymers

(iv) Thermosetting polymers

Discussion

Explore topic-wise InterviewSolutions in .

Define polymer.

Define a copolymer.

Write one use of PVC.

Define the term homopolymerisation giving an example.

(i) What is the role of t-butyl peroxide in the polymerisation of ethane ?(ii) Identify the monomers in the following polymer :(iii) Arrange the following polymers in the increasing order of their intermolecular forces : Polystyrene, Terylene, Buna-S

Give an example of thermoplastics.

Name the type of monomers in terylene.

Write name of a synthetic polymer which is an ester.

Name a natural elastomer.

Can a copolymer be formed in both addition and condensation polymerisation ? Explain with examples.

To which class of polymers does Nylon-66 belong ?

In which classes, the polymers are classified on the basis of molecular forces?

Define the term homopolymerisation giving an example.