Question

Arrange the following devices in increasing order of particulate collection efficiency for fine particles: \[ \begin{aligned} A.&\ \text{Gravity settling chamber} B.&\ \text{Cyclone separator} C.&\ \text{Electrostatic precipitator} \end{aligned} \]

• A. \(A<C<B\)
• B. \(A<B<C\)
• C. \(B<A<C\)
• D. \(A>B>C\)

Hint:

Increasing collection efficiency: \[ \boxed{ \text{Gravity Chamber} < \text{Cyclone} < \text{ESP} < \text{Fabric Filter} } \]

Answer 1

The Correct Option is B

For fine particulate matter: - Gravity settling chambers remove only coarse particles. - Cyclone separators are more efficient than settling chambers. - Electrostatic precipitators (ESPs) provide the highest efficiency, especially for fine and sub-micron particles. Thus, the increasing order of collection efficiency is \[ \boxed{ \text{Gravity Settling Chamber} < \text{Cyclone Separator} < \text{Electrostatic Precipitator} } \] Therefore, \[ \boxed{A<B<C} \] Hence, \[ \boxed{(B)} \]