Plastics are obtained from petrol-chemical products and they are moulded to shape at a very high temperature. Plastics are non-metallic objects.
Types of plastics
Methods of making plastics
Properties of Plastics
Rubber is an elastic material, which regains its original shape when stretched and released. Rubber is a non-metallic object.
Types of Rubber
There are two types of rubber, viz:
Methods of making Rubber products
Properties of Rubber
Uses of Rubber
EXERCISES
Homework
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