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
Rate of leaching increases with increasing
A Temperature
B Viscosity of solvent
C Pressure
D Size of the solid
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
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
A Increases
B Decreases
C Remains unaffected
D Increases Linearly
Leaching of phosphate rock by strong __________ acid produces phosphoric acid.
A Sulphuric
B Hydrochloric
C Either A or B
D Neither A nor B
Coffee is prepared from coffee beans by leaching with
A Cold water
B Hot water
C Dilute hot caustic solution
D Naphtha
Leaching of coarse solid lumps is also termed as
A Decoction
B Dissolution
C Percolation
D Agitation and settling
Degree of freedom for leaching and solvent extraction process is
A 1
B 3
C 0
D 2

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