In case of ______________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated?

Related Mcqs:

As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages_______________________?

A. Increase B. Decrease C. Remain unchanged D. Can either increase or decrease, depends on the system...

In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raffinate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) ?

A. 6.89 B. 8.89 C. 10 D. 8.25...

Drying of a solid involves _________________ transfer ?

A. Only heat B. Only mass C. Both heat and mass D. None of these...

Separation of two volatile liquids by distillation makes use of their___________________?

A. Selectivity B. Relative volatility C. Solubility D. Density difference...

In liquid extraction, if the selectivity is unity, then__________________?

A. Separation of the constituents is the most effective B. No separation will occur C. Amount of solvent required will be minimum D. Solvent flow rate should be very low...