Question

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

• A. Grravity setting 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 particulars
• 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 a negative charge and are attracted by the positive electrode