An organic compounds which decomposes below its boiling point can be purified by ........

Answer

To solve the question, "An organic compound which decomposes below its boiling point can be purified by...", we need to identify the appropriate purification technique.

### Step-by-Step Solution:

1. **Understanding the Problem**:
- We have an organic compound that decomposes at or below its boiling point. This means that if we try to heat the compound to its boiling point for purification, it will break down instead of vaporizing.

2. **Identifying the Purification Method**:
- The suitable method for purifying such compounds is **vacuum distillation**. This technique allows us to lower the pressure in the system, which in turn lowers the boiling point of the compound.

3. **Why Vacuum Distillation Works**:
- By using vacuum distillation, we can heat the organic compound to a temperature below its normal boiling point. This prevents decomposition while allowing the desired component to vaporize and be collected.

4. **Examples of Compounds**:
- Examples of organic compounds that can be purified by vacuum distillation include glycerol and hydrogen peroxide (H2O2), both of which decompose at or below their boiling points.

5. **Final Answer**:
- Therefore, the answer to the question is: "An organic compound which decomposes below its boiling point can be purified by **vacuum distillation**."