Q. Which one of the following is an example of melamine used for making floor tiles ?

The correct answer is: d) Thermo setting plastic

Explanation: Melamine is a type of thermosetting plastic. Thermosetting plastics are materials that, once molded and hardened, cannot be remelted or reshaped. They are known for their durability, heat resistance, and strength, which makes them suitable for applications like making floor tiles, kitchenware, and laminates. Polythene, thermoplastics, and PVC (Polyvinyl Chloride) are not examples of melamine. Instead, they belong to the category of thermoplastics, which can be melted and reshaped multiple times. Hence, the correct answer is thermosetting plastic.