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Q.

Which is an example of thermo setting polymer

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a

Polythene

b

PVC

c

Neoprene

d

Bakelite

answer is D.

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Detailed Solution

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  • Novolac on heating with formaldehyde undergoes cross linking to form an infusible solid mass called bakelite. 
  • It is thermosetting polymer which cannot be reused or remoulded.
  • Thus, bakelite is formed by cross linking of linear chains of the polymer novolac.Question ImageQuestion Image
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Which is an example of thermo setting polymer