Which of the following plastics have cross-linked monomer units? P. Bakelite Q. PVC R. Melamine S. Polyethylene
Which of the following has cross-linked polymer chains ?
(a) bakelite (b) polyester (c) PVC (d) nylon
Which of the following plastics is used for making electric switches ?
(a) teflon (b) melamine (c) PET (d) bakelite
Choose the thermoplastics and thermosetting plastics from the following :
Melamine, Polythene, Bakelite, Polyvinyl chloride
Which of the following plastics do not have cross-links between their polymer chains?
A. Nylon B. Melamine C. Terylene D. Bakelite
(a) A and B (b) B and C (c) A and C (d) C and D