Cigarette or gas lighter is made up of

Options

A. Misch metal
B. Alkali metal
C. Noble metal
D. None

Explanation

To solve the question "Cigarette or gas lighter is made up of," we will analyze the components involved in these items.

### Step-by-Step Solution:

1. **Understanding the Components**:
- A cigarette primarily consists of tobacco and paper, but the question is focused on gas lighters, which are often used to ignite cigarettes.

2. **Identifying the Materials in a Gas Lighter**:
- Gas lighters typically contain a flint, which is a spark-producing agent, and a gas reservoir that holds the flammable gas (usually butane).

3. **Flint Composition**:
- The flint in gas lighters is often made from an alloy known as misch metal. Misch metal is primarily composed of rare earth elements and is used for its ability to produce sparks when struck.

4. **Conclusion**:
- Therefore, the material that is significant in the functioning of a gas lighter is misch metal.

5. **Final Answer**:
- The correct answer to the question is **misch metal**.