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Standard XII
Chemistry
Question

Which of the following statement is true about PVC (polyvinyl chloride) and polythene?
  1. They are thermoplastics
  2. They are thermosetting plastics
  3. They are examples of natural substances
  4. They are natural fibres

A
They are thermoplastics
B
They are thermosetting plastics
C
They are examples of natural substances
D
They are natural fibres
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Solution
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Thermoplastics on heating get deformed (its shape and size can be altered) and thus can also be bent. On the other hand, thermosetting plastics cannot be bent once moulded. Some examples of Thermoplastics are – Polythene and PVC. Some examples of Thermosetting plastics are – Bakelite and Melamine.

Hence, the correct option is A

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