Q12 of 83 Page 55

Name four different plastics.

Polythene, PVC- Poly vinyl chloride, bakelite and melamine are the examples of different plastics.


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State one disadvantage of using synthetic fibres for making clothes.

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Name the form of polyester which is replacing materials like glass and used for making bottles and jars.

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Give one use of Teflon.

 14

Which of the two is a thermosetting plastic: PVC or bakelite?