Question

The statement which is not correct about control of particulate pollution is:

• 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.

Hint:

No single device can remove all particulate sizes efficiently.

Answer 1

The Correct Option is D

Wet scrubbers are effective mainly for larger and soluble particulates, not all types.