Which of the following is an example of a thermosetting polymer?
Correct answer: D. Bakelite
- A. PVC pipes
- B. Plastic toys
- C. Polystyrene
- D. Bakelite
Explanation
Bakelite is a classic example of a thermosetting polymer. When heated, it undergoes a chemical reaction that makes it rigid and heat-resistant. Unlike thermoplastics, thermosetting polymers do not melt and cannot be reshaped once set. This is why Bakelite is used in applications requiring durable and heat-resistant materials, such as electrical insulators and kitchenware. In contrast, PVC, plastic toys, and polystyrene are thermoplastics. They can be melted and reshaped multiple times, which makes them suitable for applications where flexibility and reusability are desired.
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About Industrial Chemistry
Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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