Question:easy

Which of the following is a cross-linked, thermosetting polymer?

Show Hint

Bakelite has a three-dimensional network from phenol-formaldehyde condensation.
Updated On: Oct 1, 2026
  • Bakelite
  • PVC
  • Polystyrene
  • PTFE (Teflon)
Show Solution

The Correct Option is A

Solution and Explanation

Step 1: Approach
Sort the four polymers into thermoplastic and thermosetting groups.

Step 2: Sorting
Thermoplastics: PVC, polystyrene, PTFE (can be melted and moulded again). Thermosetting: Bakelite, melamine-formaldehyde (set permanently by cross-links).

Step 3: Conclusion
The cross-linked thermosetting polymer here is Bakelite, option (A).

Final Answer:
Bakelite is a cross-linked thermosetting polymer, option (A). \[ \boxed{\text{Bakelite}} \]
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