Polymers

Short Answer Type

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What are natural and synthetic polymers? Give two examples of each type.

(i) Natural polymers are high molecular mass macromolecules and are found in plants and animals. The examples are proteins and nucleic acids, cellulose,etc.

(ii) Synthetic polymers are man-made high molecular mass macromolecules. These include synthetic plastics, fibres and rubbers. The two specific examples are polythene and dacron.

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    What type of molecules act as initiators in cationic addition polymerization?

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    Explain the term co-polymerization and give two examples.

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    How can you differentiate between addition and condensation polymerization?

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    Distinguish between the terms homopolymer and copolymer and give an example of each.

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    Write the free radical mechanism for the polymerization of ethene.

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    What is Novolac?

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    Give the uses of low density and high density polymers.

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

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    Define thermoplastics and thermosetting polymers with two examples of each.

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