Glass is a

Options

A. Micro - crystalline solid
B. Super cooled liquid
C. Gel
D. Polymeric mixture

Answer

**Step-by-Step Solution:**

1. **Identify the Nature of Glass:**
- Glass is classified as an amorphous solid. This means that it does not have a long-range order or a definite crystalline structure.

2. **Define Amorphous Solid:**
- An amorphous solid is a type of solid where the atoms or molecules are not arranged in a regular, repeating pattern. Unlike crystalline solids, which have a well-defined structure, amorphous solids lack this order.

3. **Characteristics of Amorphous Solids:**
- Amorphous solids can also be referred to as pseudo-solids. This term is used because, while they are solid, they exhibit some properties similar to liquids.
- They do not have a fixed melting point; instead, they soften over a range of temperatures.

4. **Flow Behavior:**
- Amorphous solids can flow very slowly at room temperature, which is why they are sometimes described as super-cooled liquids. This is a theoretical perspective, emphasizing their unique properties compared to crystalline solids.

5. **Conclusion:**
- Based on the definitions and characteristics discussed, glass is indeed an amorphous solid, and it can be referred to as a super-cooled liquid due to its ability to flow slowly under certain conditions.

**Final Answer:**
Glass is an amorphous solid, which can also be described as a super-cooled liquid.

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