Miscible liquids form separate layers in a mixture.

Answer

**Step-by-Step Solution:**

1. **Understanding Miscible Liquids:**
- Miscible liquids are those that can mix in any proportion without separating into layers. This means that when two miscible liquids are combined, they form a homogeneous mixture.

2. **Identifying the Statement:**
- The statement in the question claims that miscible liquids form separate layers in a mixture. This is incorrect because miscible liquids do not separate into layers.

3. **Examples of Miscible Liquids:**
- A common example of miscible liquids is alcohol (ethanol) and water. When mixed, they do not form separate layers but instead create a single, uniform solution.

4. **Separation of Miscible Liquids:**
- Since miscible liquids do not separate into layers, they cannot be separated by simple methods like decantation. Instead, they can be separated using fractional distillation, a process that utilizes differences in boiling points to separate components in a mixture.

5. **Conclusion:**
- Therefore, the statement "Miscible liquids form separate layers in a mixture" is false. Miscible liquids mix completely and can only be separated using fractional distillation.

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