The ‘shanks system’ of leaching (i.e., counter-current multiple contact leaching) is used for____________________?

Related Mcqs:

1. With increase in temperature, the leaching rate increases because of the _____________________?

   A. Increased diffusivity
   B. Decreased viscosity of liquid
   C. Both A. and B.
   D. Neither A. nor B.

2. Leaching of coarse solid lumps is also termed as _____________________?

   A. Decoction
   B. Dissolution
   C. Percolation
   D. Agitation and settling

3. For a ternary mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a ____________ of the equilateral triangular co-ordinates?

   A. Binary mixture is represented by the apex
   B. Binary mixture is represented by any point inside
   C. Ternary mixture is represented by the sides
   D. Pure component is represented by the apex

4. Leaching of uranium ore and gold ore is done in_____________________?

   A. Centrifugal extractor
   B. Pachuca tanks
   C. Bollman extractor
   D. None of these

5. Leaching rate is independent of the________________?

   A. Agitation
   B. Temperature
   C. Particle size
   D. None of these

6. With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system) ?

   A. Increases
   B. Decreases
   C. Remain unaffected
   D. Increases Linearly

7. Degree of freedom for leaching and solvent extraction process is_____________________?

   A. 0
   B. 1
   C. 2
   D. 3

8. Leaching of coffee from coffee beans is done by___________________?

   A. Hot water
   B. Hexane
   C. Lime water
   D. Dilute H2SO4 (hot)

9. Rate of leaching increases with increasing______________________?

   A. Temperature
   B. Viscosity of solvent
   C. Pressure
   D. Size of the solid

10. Leaching of sugar from sugar beets is done by___________________?

    A. Hot water
    B. Hexane
    C. Dilute H2SO4
    D. Lime water