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Chemistry · PYQ NEET UG 2018

हिन्दी

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

  1. They contain covalent bonds between various linear polymer chains.
  2. They are formed from bi- and tri- functional monomers.
  3. Examples are bakelite and melamine.
  4. They contain strong covalent bonds in their polymer chains.

Correct answer · Option 4

They contain strong covalent bonds in their polymer chains.

Explanation

Cross-linked polymers are formed from bi- and tri-functional monomers and contain strong covalent bonds forming a network structure, but the defining feature is the cross-linking between chains.
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