Question

An efficient device to eliminate particulate matter from industrial emission is

• A. Pyrolysis
• B. Cyclone separators
• C. Incineration
• D. Electrostatic precipitators
• E. Trajectory separators

Answer 1

The correct option is D Electrostatic precipitators

Electrostatic precipitators work on the principle of electrostatic force that can attract the charged particles, as per the Coulomb's Law. It consists of discharged wires and collection plates. The electric field is created by passing the electric current to the discharged wires. When the polluted air is made to pass through it, the particulate matter acquires the charge and it is attracted to the collecting plate. So, the air is purified of the particulate matter and dust particles. These are efficient than scrubbers and cyclone separators.

Hence, the correct answer is 'Electrostatic precipitators'