Identify the heterogeneous mixture among the following:

Options

A. brine solution
B. duralumin
C. gunpowder
D. liquor ammonia

Answer

To identify the heterogeneous mixture among the provided options, we need to understand what a heterogeneous mixture is. A heterogeneous mixture is one that consists of two or more components that are not uniformly distributed, meaning that the different components can be distinguished and separated easily.

### Step-by-Step Solution:

1. **Understand the Definition**:
- A heterogeneous mixture is a mixture where the components are in different phases and can be easily separated.

2. **Analyze the Options**:
- **Option 1: Brine Solution**
- Brine is a mixture of salt and water. When mixed, the salt dissolves in water, making it a homogeneous mixture because the components cannot be easily distinguished or separated.
- **Option 2: Duralumin**
- Duralumin is an alloy of aluminum and copper. Alloys are homogeneous mixtures because their components are uniformly distributed and cannot be easily separated.
- **Option 3: Gunpowder**
- Gunpowder consists of charcoal, a stabilizer, and an oxidizer. These components are not uniformly mixed and can be distinguished from one another, making it a heterogeneous mixture.
- **Option 4: Liquid Ammonia**
- Liquid ammonia is a pure substance and consists of ammonia molecules in the same phase, thus it is homogeneous.

3. **Identify the Heterogeneous Mixture**:
- From the analysis, we find that **Option 3: Gunpowder** is the only heterogeneous mixture since it contains components that are in different phases and can be easily separated.

### Conclusion:
The correct answer is **Option 3: Gunpowder**.

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