Multiple choice

Which of the following pairs represents thermosetting polymers with respect to the classification based on molecular forces?

  1. Buna-S, Neoprene

  2. Nylon 6,6, Neoprene

  3. UFR, Bakelite

  4. Bakelite, Polythene

  5. UFR, Polythene

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thermosetting polymers are cross linked or heavily branched molecules, which on heating undergo extensive cross linking in moulds and again become infusible. These cannot be reused. Some common examples are bakelite, urea-formaldelyde resins (UFR), etc.