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