Which of the following is acidic in nature?

Options

A. Lime juice
B. Human blood
C. Lime water
D. Antacid

Explanation

To determine which of the given options is acidic in nature, we can analyze each option based on their chemical composition and properties.

### Step-by-Step Solution:

1. **Identify the Options**: The question provides four options:
- Lime Juice
- Human Blood
- Lime Water
- Antacid

2. **Analyze Lime Juice**:
- Lime juice contains citric acid, which is a weak organic acid.
- Since it contains an acid, lime juice is acidic in nature.

3. **Analyze Human Blood**:
- Human blood has a pH range of 7.35 to 7.45, which indicates that it is slightly basic.
- Therefore, human blood is not acidic.

4. **Analyze Lime Water**:
- Lime water is a solution of calcium hydroxide (Ca(OH)₂), which is a strong base.
- Thus, lime water is not acidic.

5. **Analyze Antacid**:
- Antacids are substances that neutralize stomach acid and are typically basic in nature.
- Therefore, antacids are not acidic.

6. **Conclusion**:
- The only option that is acidic in nature is **Lime Juice**.

### Final Answer:
The correct answer is **Lime Juice**.

---