A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel
Related Mcqs:
- 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_______________?
A. Added to the feed slurry
B. Pre-coated on the filter medium prior to filtration
C. Separated from the cake by dissolving solids or by burning it off
D. All A, B. & C. - Which of the following is not used as filter aid ?
A. Asbestos
B. Diatomaceous earth
C. Purified wood cellulose
D. Rice husk - Which one is a filter aid ?
A. Canvas fabric
B. Diatomaceous earth
C. Calcined lime
D. None of these - In filtration, the use of ‘filter aid’ helps in__________________?
A. Reducing the filtration pressure
B. Accelerating the rate of filtration
C. Deplugging the filter medium
D. Enhancing the cake porosity in case of a dense impermeable cake - Addition of filter aid to the slurry before filtration is done to _______________ of the cake?
A. Increase the porosity
B. Increase the compressibility co-efficient
C. Decrease the porosity
D. Decrease the compressibility co-efficient - Filter aid is used to____________________?
A. Increase the rate of filtration
B. Decrease the pressure drop
C. Increase the porosity of the cake
D. Act as a support base for the septum - _____________ is the most commonly used ‘filter aid’?
A. Diatomaceous earth
B. Fuller’s earth
C. Vermiculite
D. Semi-plastic clay - Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a _______________ surface?
A. Plane
B. Curved
C. Ribbed
D. Either A. or B. - The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size)?
A. c/s
B. s/c
C. s . c
D. 1/s . c - Tank filter (e.g., Nutsche filter) is___________________?
A. A high pressure filter
B. A continuous filter
C. Used for small scale filtration work
D. A leaf filter
