Year: 2018
Topic: Chemistry-Out Of Syllabus
Time :
1.
Regarding cross-linked or network polymers, which of the following statements is incorrect ?
(1). They contain strong covalents bonds in their polymer chains.
(2). Examples are bakelite and melamine.
(3). They are formed from bi- and tri-functional monomers.
(4). They contain covalent bonds between various linear polymer chains.