Name the compound used in match industry

Options

A. `Pb_(3)O_(4)`
B. `CaCO_(3)`
C. NaOH
D. `KNO_(3)`

Answer

To answer the question about the compound used in the match industry, we can follow these steps:

### Step 1: Identify the Compounds Listed
The question provides four compounds:
1. Pb3O4 (Lead(II,IV) oxide)
2. Calcium carbonate (CaCO3)
3. Sodium hydroxide (NaOH)
4. Potassium nitrate (KNO3)

### Step 2: Understand the Uses of Each Compound
- **Pb3O4**: This compound is a mixture of lead(II) oxide (PbO) and lead(IV) oxide (PbO2). It is known for its properties as a strong oxidizing agent and is used in various applications including the manufacturing of matches.

- **Calcium Carbonate (CaCO3)**: This is primarily used as a dietary supplement and antacid. It does not have any significant role in the match industry.

- **Sodium Hydroxide (NaOH)**: This is a strong base used in the manufacture of soaps, paper, and other commercial products. It is not used in the match industry.

- **Potassium Nitrate (KNO3)**: This compound is a strong oxidizer and is used in fertilizers and gunpowder, but it is not specifically used in the match industry.

### Step 3: Determine the Correct Compound
From the analysis of the uses of each compound, it is clear that **Pb3O4** is the compound used in the match industry due to its oxidizing properties, which are essential for the combustion process in matches.

### Conclusion
The compound used in the match industry is **Pb3O4 (Lead(II,IV) oxide)**.

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