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Polymers

Short Answer Type

111.

What is Novolac?

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112.

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

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113.

Give the uses of low density and high density polymers.

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114.
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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