Which one of the following is a most efficient device to eliminate particulate matters from the industrial emission ?

Options

A. Cyclonic separators
B. Trajectory separators
C. Electrostatic precipitator
D. Incineration

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the most efficient device used to eliminate particulate matter from industrial emissions. Particulate matter refers to tiny particles or droplets in the air that can be harmful to health and the environment.

2. **Identifying Devices for Emission Control**: There are several devices used in industries to control emissions, including filters, scrubbers, and electrostatic precipitators.

3. **Evaluating the Options**: Among these devices, we need to determine which one is specifically designed for the efficient removal of particulate matter.

4. **Focusing on Electrostatic Precipitators**: The electrostatic precipitator is a device that is particularly effective in removing particulate matter from industrial emissions. It works by applying a high voltage electrostatic charge to the particles.

5. **Understanding the Mechanism**: The high voltage creates an electrostatic field that charges the particulate matter. Once charged, these particles are attracted to and collected on charged plates, effectively removing them from the emissions.

6. **Conclusion**: Based on the efficiency and mechanism of operation, the electrostatic precipitator is identified as the most efficient device for eliminating particulate matter from industrial emissions.

**Final Answer**: The most efficient device to eliminate particulate matter from industrial emissions is the **electrostatic precipitator**.

---