Which non-metal is used for making pencil lead?

Options

A. Silicon
B. Sulphur
C. Graphite
D. Selenium

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: We need to find out which non-metal is used for making pencil lead.

2. **Consider the Options**: The options provided include various non-metals such as silicon, sulfur, graphite, and selenium.

3. **Evaluate Each Option**:
- **Silicon**: This is a non-metal but is primarily used in making alloys and is not used for pencil lead. Therefore, it is not the correct answer.
- **Sulfur**: This non-metal is commonly used in the production of car batteries and fertilizers, but it is not used for making pencil lead. So, this option is also incorrect.
- **Graphite**: This is an allotrope of carbon, known for its black color. It is soft and slippery, which allows it to leave a mark on paper when used for writing. This makes it the ideal material for pencil lead.
- **Selenium**: This non-metal is used in treating selenium deficiency, particularly in pregnant women, but it is not used for making pencil lead. Hence, this option is incorrect as well.

4. **Conclusion**: After evaluating all the options, we find that the correct non-metal used for making pencil lead is **graphite**.

**Final Answer**: Graphite is the non-metal used for making pencil lead.

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