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?

Related Mcqs:

1. In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?

   A. Plug
   B. Turbulent
   C. Laminar
   D. None of these

2. 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.

3. Flow of filtrate through the cake in a plate and frame filter press is best described by the ______________ equation?

   A. Kozeny-Carman
   B. Hagen-Poiseuille’s
   C. Fanning’s
   D. Kremser

4. In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is__________________?

   A. 4
   B. 1/4
   C. 1
   D. 1/2

5. 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

6. Supporting legs of a plate and frame filter is normally made of________________?

   A. Stainless steel
   B. Cast iron
   C. High speed steel
   D. Wooden plank

7. The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant ______________ filtration?

   A. Rate
   B. Pressure
   C. Both A. & B.
   D. Neither A. nor B.

8. 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.

9. Percentage of drum submerged in the slurry in case of rotary drum filter is ________________?

   A. 3
   B. 30
   C. 85
   D. 25

10. The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?

    A. 10
    B. 20
    C. 25
    D. 30