Regarding cross-linked or network polymers, which of the following statements is incorrect?

Examples are bakelite and melamine.

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They are formed from bi- and tri-functional monomers.

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They contain covalent bonds between various linear polymer chains.

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They contain strong covalent bonds in their polymer chains.

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Solution

The correct option is D They contain strong covalent bonds in their polymer chains.
Cross linked or network polymers are formed from bi-functional and tri-functional monomers and contain strong covalent bonds between various linear polymer chains, e.g. bakelite, melamine etc. Option (4) is not related to cross-linking.

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Similar questions

Which of the following plastics do not have cross-links between their polymer chains?
A. Nylon
B. Melamine
C. Polyvinyl Chloride
D. Bakelite

Which of the following has cross-linked polymer chains ?

(a) bakelite (b) polyester (c) PVC (d) nylon

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