A. Asbestos
B. Diatomaceous earth
C. Purified wood cellulose
D. Rice husk
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 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 - The most common filter aid is_________________?
A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel - 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 - The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the _____________ filter?
A. Vacuum
B. Sand
C. Plate & frame
D. Rotary - Shell and leaf filter as compared to plate and frame filter _____________________?
A. Entails less labor cost
B. Facilitates filtration under higher pressure
C. Provides more effective washing
D. All A., B. & C. - Moore filter is a ______________ filter ?
A. Leaf
B. Press
C. Rotary
D. Sand
