A. Varies inversely as the pressure
B. Varies directly as the pressure
C. Is independent of pressure
D. Is equal to the volumetric diffusivity
Related Mcqs:
- The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
A. 1
B. 0.5
C. 10
D. 0 - 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 - Unit of molal diffusivity is____________________?
A. cm2/sec gm . mole
B. gm moles/cm2 . sec
C. gm moles/cm. sec
D. gm moles/cm2. sec - In case of liquids, the binary diffusivity is proportional to (where, T = temperature) _____________________?
A. T
B. √T
C. T2
D. 1/T - In case of gases, the binary diffusivity is proportional to (where, P = pressure) ?
A. P
B. 1/P
C. 1/√P
D. √P - The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of________________?
A. Newtonian liquids
B. Non-Newtonian liquids
C. Ideal gases
D. Real gases - If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is____________________
A. 0
B. 1
C. 1 - The binary diffusivity in gases does not depend upon the ___________________?
A. Pressure
B. Temperature
C. Nature of the components
D. None of these - The binary diffusivity in gases at atmospheric conditions is about ___________________?
A. 10-9 cm/sec
B. 10-1 cm2/sec
C. 10-3 sec/cm
D. 10-4 cm2/sec2 - With increase in temperature, the solubility of gases in liquids, at fixed pressure____________________?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on the system
