Choose the correct option out of the following choices.
Assertion: Network polymers are thermosetting.
Reason: Network polymers have high molecular mass.
Answer & explanation
Correct answer: option 1
Network polymers are thermosetting because they can't be reused after heating once. As a result of substantial cross-linking caused by heating, it becomes infusible once more.
During polymerization, extensive cross-linking results in the development of a three-dimensional network that is tough, infusible, and insoluble.