The substance that will be flattened on beating with a hammer is

Options

A. crystal of iodine
B. piece of coal
C. lump of sulphur
D. zinc granule

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a substance that can be flattened when beaten with a hammer. This implies that we are looking for a material that can undergo deformation without breaking.

2. **Identifying Types of Substances**: Substances can generally be categorized into two types: metals and non-metals. Metals are typically hard and can be shaped or flattened, while non-metals are usually softer and more brittle.

3. **Properties of Metals**: Metals have the property of malleability, which means they can be hammered or rolled into thin sheets without breaking. This is a key characteristic that allows them to be flattened.

4. **Analyzing the Options**:
- **Crystal of Iodine**: This is a non-metal and is soft. When beaten, it breaks into powder rather than flattening. Therefore, it is not the correct answer.
- **Piece of Coal**: Coal is also brittle and will break into smaller pieces when struck, rather than flattening. Hence, it is not the correct answer.
- **Lump of Sulphur**: Similar to coal, sulphur is brittle and will break into smaller particles when beaten. This option is also incorrect.
- **Zinc Granules**: Zinc is a metal and possesses malleability. When beaten with a hammer, zinc can be flattened. This makes it the correct answer.

5. **Conclusion**: The substance that can be flattened when beaten with a hammer is **zinc granules**.

**Final Answer**: Zinc granules.

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