Related Questions

With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
A Increases
B Decreases
C Remains unaffected
D Increases Linearly
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
Selectivity of the solvent used in solvent extraction should be
A 1
B > 1
C 0
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
The leaching solvent used in Baeyer's process for the purification of bauxite is
A Ammonium hydroxide
B Sodium carbonate
C Sodium hydroxide
D Ammonium carbonate
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
Which of the following is the most commonly used leaching solvent in vegetable oil industry?
A Phenol
B Hexane
C Furfurol
D Liquid SO2
Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is
A Propane
B Diethylene glycol
C Aqueous solution (10% water) of diethylene glycol
D Methyl ethyl ketone (MEK)
Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the
A Elimination of solvent drying facility
B Higher nitration temperature
C Lower solvent dilution ratio
D All of the above
Extraction of pencillin employs a __________ extraction coloumn.
A Centrifugal
B Packed
C Plate
D None of these

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