A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on the system
Related Mcqs:
- If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?
A. The system comprises of partially miscible liquids
B. The system comprises of miscible liquids
C. The system comprises of an azeotrope
D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear - A plait point is the point on the solubility curve, where the tie line reduces to a point. What is the number of plait point for a ternary system containing two pairs of partially miscible liquids ?
A. 0
B. 1
C. 2
D. 3 - With increase in temperature, the mutual solubility of two liquids_________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Decreases exponentially - With increase in temperature, the mutual solubility of two liquids___________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Decreases exponentially - In case of non-ideal gases and liquids, the molal diffusivity ________________?
A. Varies inversely as the pressure
B. Varies directly as the pressure
C. Is independent of pressure
D. Is equal to the volumetric diffusivity - The binary diffusivity in gases and liquids vary respectively as_________________?
A. T3/2 and T
B. T and T3/2
C. √T and T3/2
D. T3/2 and √T - For the flow of gases through a capillary, with increase in temperature, the permeability __________________ as per Knudsen law?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B.; depends on the gas - With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas________________?
A. Increases
B. Decreases
C. Decreases linearly
D. Remain unaffected - In case of liquids, the binary diffusivity is proportional to (where, T = temperature) _____________________?
A. T
B. √T
C. T2
D. 1/T - When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ?
A. As the acetone concentration increases, the solubility curves approach each other
B. Both the phases become identical at a particular common point on both the solubility curves
called the plait point
C. The distribution curve which is a plot between x (acetone concentration in one phase) and y
(acetone concentration in other phase) is analogous to x-y curve used in distillation and
absorption terminates on the x = y diagonal at the concentration of the plait point
D. All A., B. and C.
