Some plastics, such as ____________ melt and burn easily when they come in contact with fire.

Options

A. Polythene
B. Bakelite
C. Melamine
D. PVC

Explanation

**Step-by-Step Solution:**

1. **Identify the Types of Plastics**: Understand that there are two main types of plastics: thermoplastics and thermosetting plastics. Thermoplastics can be melted and reshaped, while thermosetting plastics cannot be remelted once they are set.

2. **Define Thermoplastics**: Thermoplastics are plastics that become soft and pliable when heated and can be molded into different shapes. They can easily melt and burn when exposed to fire.

3. **Define Thermosetting Plastics**: Thermosetting plastics, on the other hand, are plastics that do not melt upon heating. Once they are set into a shape, they retain that shape and cannot be remolded or melted.

4. **Examples of Thermoplastics**: Identify examples of thermoplastics that melt easily. One common example is polythene.

5. **Conclusion**: Based on the information gathered, the answer to the question is that some plastics, such as **polythene**, melt and burn easily when they come in contact with fire.

**Final Answer**: Some plastics, such as **polythene**, melt and burn easily when they come in contact with fire.

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