A yellow stain of turmeric containing curry on a white shirt turns red when soap solution is scrubbed on it. This shows that soap solution is :

Options

A. basic
B. acidic
C. neutral
D. sour

Answer

To determine the nature of the soap solution based on the color change of turmeric on a white shirt, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Stain**: The stain on the white shirt is yellow due to turmeric, which is commonly used in curry.

2. **Understand Turmeric as an Indicator**: Turmeric acts as a natural pH indicator. It changes color depending on the pH of the solution it comes in contact with.

3. **Color Change in Different pH**:
- In acidic and neutral solutions, turmeric remains yellow.
- In basic solutions, turmeric changes color from yellow to red.

4. **Observation of the Stain**: When the soap solution is scrubbed on the turmeric stain, the color changes from yellow to red.

5. **Conclusion**: Since the turmeric stain turns red upon contact with the soap solution, it indicates that the soap solution is basic in nature.

### Final Answer:
The soap solution is **basic**.

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