Which of the following is a mineral acid ?

Options

A. Oxalic acid
B. Sulphuric acid
C. Malic acid
D. Acetic acid

Explanation

To determine which of the given acids is a mineral acid, we will analyze each option based on their classification as organic or inorganic acids.

### Step-by-Step Solution:

1. **Understanding Acid Classification**:
- Acids are classified into two main categories: organic acids and inorganic acids.
- Organic acids are derived from natural sources, while inorganic acids (also known as mineral acids) are not typically found in nature.

2. **Analyzing the Options**:
- **Option A: Oxalic Acid**:
- Oxalic acid (C2H2O4) is a dicarboxylic acid.
- It is found in various plants and leafy greens.
- **Conclusion**: Oxalic acid is an organic acid, not a mineral acid.

- **Option B: Sulphuric Acid**:
- Sulphuric acid (H2SO4) is a strong inorganic acid.
- It is not derived from natural sources and is synthesized through industrial processes.
- **Conclusion**: Sulphuric acid is a mineral acid.

- **Option C: Malic Acid**:
- Malic acid (C4H6O5) is also a dicarboxylic acid.
- It is found in fruits and wines.
- **Conclusion**: Malic acid is an organic acid, not a mineral acid.

- **Option D: Acetic Acid**:
- Acetic acid (C2H4O2) is a simple organic acid.
- It is found in vinegar and produced by certain bacteria.
- **Conclusion**: Acetic acid is an organic acid, not a mineral acid.

3. **Final Conclusion**:
- Among the options provided, the only mineral acid is **sulphuric acid** (Option B).

### Answer:
**Sulphuric acid is the mineral acid.**

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