What can you say about the nature of a solution which turns blue litmus paper red?

Options

A. Acidic
B. Basic
C. Neutral
D. None of the above

Answer

To determine the nature of a solution that turns blue litmus paper red, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Litmus Paper**: Litmus paper is a pH indicator used to test whether a solution is acidic, basic, or neutral. It comes in two colors: blue and red.

2. **Identify the Reaction**: When blue litmus paper is placed in a solution, it will change color based on the nature of that solution:
- If the solution is acidic, the blue litmus paper turns red.
- If the solution is basic, the red litmus paper turns blue.
- If the solution is neutral, both blue and red litmus papers remain unchanged.

3. **Analyze the Given Information**: The question states that blue litmus paper turns red when placed in the solution. This indicates that the solution has reacted with the litmus paper.

4. **Conclude the Nature of the Solution**: Since the blue litmus paper has turned red, we can conclude that the solution is acidic in nature.

### Final Answer:
The solution that turns blue litmus paper red is acidic in nature.

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