Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is_______________?

Question

Accepted Answer

All A, B. & C.. Filter aids can be added to the slurry (A), pre-coated on the filter medium (B), or sometimes removed by dissolving/burning (C). Therefore, all options describe ways related to filter aids.