Related Questions

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 & B
D Neither A nor B
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
With increase in temperature, the rate of leaching increases, because the
A Diffusivity of solute increases
B Viscosity of solvent decreases
C Thermal conductivity of solute increases
D None of these
With increase in temperature, the leaching rate increases due to
A Decreased liquid viscosity
B Increased diffusivity
C Both A & B
D Neither A nor B
Degree of freedom for leaching and solvent extraction process is
A 1
B 3
C 0
D 2
For a ternery 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 Ternery mixture is represented by the sides
D Pure component is represented by the apex
Rate of leaching increases with increasing
A Temperature
B Viscosity of solvent
C Pressure
D Size of the solid
Leaching rate is independent of the
A Agitation
B Temperature
C Particle size
D None of these
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when
A Extracting solvent is cheaply & abundantly available
B One of the liquid components is heat sensitive
C Viscosity of liquid components is very high
D One of the liquid components has very high affinity towards the solvent
Extraction of pencillin employs a __________ extraction coloumn.
A Centrifugal
B Packed
C Plate
D None of these

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