State whether the following statements are true or false.
Solubility of a substances decreases on lowering the temperature.

Answer

To determine whether the statement "Solubility of a substance decreases on lowering the temperature" is true or false, we can analyze the concept of solubility and its relationship with temperature.

### Step-by-Step Solution:

1. **Understanding Solubility**:
- Solubility is defined as the maximum amount of a substance that can be dissolved in a given amount of solvent at a specific temperature.

2. **Effect of Temperature on Solubility**:
- Temperature is one of the key factors that affect solubility. Generally, for most solid solutes, solubility increases as the temperature increases. This means that more of the solid can dissolve in the solvent when the temperature is higher.

3. **Lowering Temperature**:
- Conversely, when the temperature is lowered, the solubility of most solid substances decreases. This means that less of the solid can dissolve in the solvent at lower temperatures.

4. **Conclusion**:
- Since the statement claims that the solubility of a substance decreases on lowering the temperature, and based on the understanding that solubility typically decreases with a decrease in temperature for solid solutes, we can conclude that the statement is true.

### Final Answer:
The statement is **True**.

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