Bleaching powder does not show oxidising properties.

Answer

To determine whether the statement "Bleaching powder does not show oxidizing properties" is true or false, we can analyze the properties of bleaching powder and its reactions.

### Step-by-Step Solution:

1. **Identify the Chemical Composition**:
- Bleaching powder is chemically known as calcium oxychloride, with the molecular formula \( \text{Ca(OCl)}_2 \) or \( \text{CaOCl}_2 \).

2. **Understanding Oxidizing Properties**:
- An oxidizing agent is a substance that can accept electrons from another substance during a chemical reaction, leading to the oxidation of that substance.

3. **Reactions of Bleaching Powder**:
- When bleaching powder reacts with dilute acids, it produces hypochlorous acid (\( \text{HOCl} \)) and hydrochloric acid (\( \text{HCl} \)).
- The reaction can be represented as:
\[ \text{Ca(OCl)}_2 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{HOCl} \]

4. **Formation of Nascent Oxygen**:
- Hypochlorous acid (\( \text{HOCl} \)) can further decompose to release nascent oxygen, which is a highly reactive form of oxygen that can oxidize other substances.
- The decomposition can be represented as:
\[ 2\text{HOCl} \rightarrow 2\text{HCl} + \text{O}_2 \]
- This nascent oxygen is responsible for the oxidizing properties of bleaching powder.

5. **Conclusion**:
- Since bleaching powder can release nascent oxygen and oxidize other substances, it indeed exhibits oxidizing properties.
- Therefore, the statement "Bleaching powder does not show oxidizing properties" is **false**.

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