With increase in temperature, the rate of leaching increases, because the___________________?

Related Mcqs:

1. If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?

   A. The system comprises of partially miscible liquids
   B. The system comprises of miscible liquids
   C. The system comprises of an azeotrope
   D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear

2. With increase in temperature, the leaching rate increases due to__________________?

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

3. 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.

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

   A. Recovery of tannis from the tree barks and woods
   B. Leaching sodium nitrate from Chilean nitrate bearing rock
   C. Both A. and B.
   D. Neither A. nor B.

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

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

6. Rate of leaching increases with increasing______________________?

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

7. Leaching rate is independent of the________________?

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

8. 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

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

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

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

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