What is the role of benzoyl peroxide in addition polymerisation of alkenes ?

2

(a)

Name the sub-groups into which polymers are classified on the basis of magnitude of intermolecular forces.

2

(a)

How are polymers classified on the basis of structure ?

2

(a)

Classify the following as addition and condensation polymers : Terylene, Bakelite, Polyvinyl chloride, polythene.

2

(a)

What are polymers?Why are they called macromolecules?

2

(a)

Differentiate between a homopolymer and a copolymer.Give one example of each type.

2

(a)

Give one example each of 
(i) addition polymers
(ii) condensation polymers

2

(a)

How are polymers classified into different categories on the basis of intermolecular forces of attraction?Give one example of a polymer of each of these categories.

2

(a)

How are polymer classified on the basis of forces operating between the molecules?To which of these classes does nylon6,6 belong?

2

(a)

What is the structural difference between HDP and LDP ? How does the structure account for different behaviour and nature, hence the use of a polymer ?

2

(a)

Which type of biomolecules have some structural similarity with synthetic polymides ? What is this similarity ?

2

(a)

Why should the monomers used in addition polymerisation through free radical pathway be very pure ?

2

(a)