Question

Which one of the following is not an example for filter aid?
A. Activated Charcoal
B. Bentonite
C. Kaolin
D. Talc ​

Answer 1

Explanation:

A is the answer

Activated charcoal

Answer 2

Option (a) -Activated Charcoal

Activated Charcoal is not an example of a filter aid

Explanation:

• Activated Charcoal is not an example of a filter aid.
• Filter aid is an agent containing solid particles. The purpose of filter aid is to improve the filtering efficiency.
• It is done by increasing the permeability of the filter cake..
• Water purification processes use alum acts as a coagulant.
• The role of coagulant is to bind extremely fine and small particles which are suspended in impure water into larger particles which  can be removed by filtration and settling.  
• This process allows the removal of unwanted color and turbidity.