Electrostatic precipitator are used to remove

Options

A. `SO_(2)`
B. Particulate matter
C. Peroxyacetyl nitrate
D. Nitrogen oxides

Answer

**Step-by-Step Solution:**

1. **Understanding Electrostatic Precipitators (ESP):**
- Electrostatic precipitators are devices used to remove particles from a gas stream. They are commonly used in industrial applications to control air pollution.

**Hint:** Think about the function of ESP in relation to air quality and pollution control.

2. **Function of ESP:**
- The primary function of an electrostatic precipitator is to remove particulate matter, which includes dust, smoke, and other small particles suspended in the air.

**Hint:** Consider what types of pollutants are often found in industrial emissions.

3. **Mechanism of Action:**
- ESPs work by using electrical energy to charge the particles in the gas stream. This can be done by charging the particles either positively or negatively.

**Hint:** Reflect on how electrical charges can affect particles in a gas stream.

4. **Charging Process:**
- Once the particles are charged, they are attracted to oppositely charged plates within the precipitator, where they accumulate and can be removed from the gas stream.

**Hint:** Think about the principles of attraction and repulsion of charged particles.

5. **Identifying the Correct Answer:**
- Among the options provided, the correct answer is "Particulate matter," as electrostatic precipitators are specifically designed to remove these particles from the air.

**Hint:** Review the options carefully and match them with the function of ESP.

**Final Answer:**
Electrostatic precipitators are used to remove particulate matter from a gas stream.

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