Identify the heterogeneous mixture among the following.

Options

A. Brine solution
B. Duralumin
C. Gun powder
D. Liquor ammonia

Answer

To identify the heterogeneous mixture from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Heterogeneous Mixture**:
- A heterogeneous mixture is one in which the components are not uniformly distributed and can be physically distinguished. The individual substances retain their properties and can often be seen with the naked eye.

2. **Analyze Each Option**:
- **Brine Solution**: This is a homogeneous mixture of salt (NaCl) dissolved in water. The components are not visible separately, as they are chemically mixed.
- **Uralomeat**: This is an alloy, which is a homogeneous mixture of metals. The constituents are chemically combined and cannot be seen separately.
- **Gunpowder**: This is a mixture of sulfur, charcoal, and potassium nitrate. The components are not chemically combined and can be seen separately, making it a heterogeneous mixture.
- **Liquid Ammonia**: This is a solution of ammonia in water, which is also a homogeneous mixture where the components are not visible separately.

3. **Identify the Heterogeneous Mixture**:
- From the analysis, gunpowder is the only option that is a heterogeneous mixture because its components can be seen and are not chemically combined.

### Conclusion:
The heterogeneous mixture among the given options is **gunpowder**.

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