While analyzing a piece of plastic, John observed that it softened on heating and hardened on cooling. He was also able to mould it into different shapes after heating. Which amongst the following might be that material?

PVC

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Bakelite

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Nylon

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Melamine

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Solution

The correct option is A PVC
Plastics that get deformed easily on heating and can be remoulded are known as thermoplastics. Thermoplastics will soften when heated and hardened when cooled. Polyvinyl chloride (PVC) is the best example of thermoplastic.

Bakelite and melamine are examples of thermosetting plastics.

Nylon is a synthetic fibre which melts on heating.

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Similar questions

Which of the following are characteristics of thermosetting polymers?

(a) Heavily branched cross linked polymers

(b) Linear slightly branched long chain molecules

(d) Soften on heating and harden on cooling, can be reused

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