Q. Regarding cross-linked or network polymers, which of the following statements is incorrect ?
A) Examples are bakelite and melamine.
B) They are formed from bi- and tri-functional monomers.
C) They contain covalent bonds between various linear polymer chains.
D) They contain strong covalent bonds in their polymer chains.
Explanation
[Solution] Cross-linked polymers have strong covalent bonds between the linear chains (cross-links), formed from bi- and tri-functional monomers, e.g. bakelite and melamine. Statement (4) does not describe the cross-linking and is the accepted incorrect statement. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.