You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?

Explanation

To identify the contents of each test tube containing distilled water, an acidic solution, and a basic solution using only red litmus paper, follow these steps:

### Step-by-Step Solution:

1. **Label the Test Tubes**:
- Label the three test tubes as Test Tube 1, Test Tube 2, and Test Tube 3 for easy identification.

2. **Dip Red Litmus Paper in Test Tube 1**:
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