Which one of the following is used for making crackers?

Options

A. Copper
B. Sulphur
C. Iron
D. Chlorine

Explanation

To determine which substance is used for making crackers, we can follow these steps:

### Step 1: Identify the materials used in crackers
Crackers are typically made using a combination of metals and non-metals. Commonly used materials include magnesium, sulfur, and barium.

### Step 2: Understand the role of each material
- **Magnesium**: When burned, magnesium produces a bright light, which is a desirable effect in fireworks and crackers.
- **Sulfur**: This is often used for its ability to produce various colors and effects when burned.
- **Barium**: This metal is used to create green colors in fireworks.

### Step 3: Analyze the options provided
The question asks to identify which one of the listed options is used for making crackers. The most commonly used materials in crackers would be magnesium and sulfur.

### Step 4: Conclusion
Based on the information, magnesium and sulfur are key components in the making of crackers. Therefore, if the options included magnesium or sulfur, those would be the correct answers.

### Final Answer
Magnesium and sulfur are used for making crackers.

---