The example of amorphous solid is

Options

A. Cesium chloride
B. Glass
C. Mohr Salt
D. Calcium fluoride

Answer

To determine the example of an amorphous solid from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Solids**:
- Solids can be classified into two main categories: crystalline solids and amorphous solids.
- Crystalline solids have a well-defined, regular arrangement of their constituent particles over long distances, forming a crystal lattice.
- Amorphous solids, on the other hand, have a disordered arrangement of particles. Their structure is regular only over short distances, and they do not form a long-range order.

2. **Identify the Characteristics of Amorphous Solids**:
- Amorphous solids do not have a definite shape or a sharp melting point.
- They tend to be isotropic, meaning their properties are the same in all directions.
- Common examples of amorphous solids include glass, plastics, and gels.

3. **Evaluate the Given Options**:
- The question provides four options. We need to analyze each option to determine if it is crystalline or amorphous.
- **Cesium Chloride (CsCl)**: This is a crystalline solid as it forms a well-defined crystal structure.
- **Mohr's Salt (FeSO4·(NH4)2SO4·6H2O)**: This is also a crystalline solid, known for its regular arrangement of particles.
- **Calcium Chloride (CaCl2)**: This is another crystalline solid with a defined crystal lattice.
- **Glass**: Glass is known to be an amorphous solid, as it lacks a long-range order in its structure.

4. **Conclusion**:
- After evaluating all options, the only example of an amorphous solid is **glass**.

### Final Answer:
The example of an amorphous solid is **glass**.

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