Question

Which of the following statements about control of particulate pollution is not correct?

• A. Gravity settling chamber removes larger particles from the air
• B. Cyclone collector removes fine particles in the diameter range 5-20 m
• C. Wet scrubbers are used to wash away all types of particulate matter
• D. In electrostatic precipitator, the particulates are made to acquire positive charge which then attracted by negative electrode and removed.

Answer 1

The correct option is D

In electrostatic precipitator, the particulates are made to acquire positive charge which then attracted by negative electrode and removed.

Particulates acquire negative charge and are attracted by the positive electrode