Q. Which of the following statements about control of particulate pollution is false?
A) Gravity settling chamber removes larger particles from the air.
B) Cyclone collector removes fine particles in the diameter range 5-20 microns.
C) Wet scrubbers are used to wash away all types of particulates.
D) In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed.
Explanation
(d)
In electrostatic precipitator, the electrode plate is positively charged. Thus, the particulates acquire negative charge and are attracted by the negative electrode plate
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.