A. Liquid-liquid extraction
B. Solid-liquid extraction
C. Multi-component absorption with chemical reaction
D. Multi-component distillation
A. 0
B. 1
C. > 1
D. < 1
A. X/(X + 1)
B. X/(1 – X)
C. (1 + X)/X
D. (1 – X)/X
A. Water has a high latent heat of evaporation
B. Lewis number is close to unity
C. They are always equal under all circumstances
D. Solubility of the components of air in water is very small
A. Ri = Re/(1 – Re)
B. Ri = (1 – Re)/Re
C. Ri = Re
D. Ri = Re/(1 + Re)
A. Fractional crystallisation
B. Liquid extraction
C. Absorption
D. Evaporation
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
A. 0.86%
B. 1.16%
C. 2.50%
D.−2.5%
A. Increases
B. Decreases
C. Remains unchanged
D. Depends on relative volatility
A. Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank
B. Separation of sugar from sugar beet by hot water
C. Dissolution of tannin out of tree barks by water
D. Recovery of vegetable oils from seeds