Which of the following do not show the properties of the constituents?

Options

A. water
B. air
C. sugar solution
D. none of these

Explanation

To solve the question of which of the following substances do not show the properties of their constituents, we need to understand the difference between pure substances and mixtures.

### Step-by-Step Solution:

1. **Identify the Types of Substances**:
- We need to categorize the given options into pure substances and mixtures. Pure substances include elements and compounds, while mixtures consist of two or more substances that retain their individual properties.

2. **Analyze Each Option**:
- **Option 1: Water (H2O)**: Water is a compound made from hydrogen and oxygen. When these elements react chemically, they form water, which has different properties than hydrogen and oxygen. Therefore, water does not show the properties of its constituents.
- **Option 2: Air**: Air is a mixture of various gases, primarily nitrogen and oxygen. Since it is a mixture, it retains the properties of its constituent gases. Thus, air shows the properties of its constituents.
- **Option 3: Sugar Solution**: A sugar solution is a mixture of sugar and water. Both components retain their properties in the solution, meaning that the sugar solution also shows the properties of its constituents.

3. **Conclusion**:
- Based on the analysis, the only option that does not show the properties of its constituents is **water (H2O)**, as it is a pure substance and a compound.

### Final Answer:
**Water (H2O) does not show the properties of its constituents.**

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