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.Management Sciences
Category: Mass Transfer
Drying of a solid involves _________________ transfer ?
0
A. Only heat
B. Only mass
C. Both heat and mass
D. None of these
In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)________________?
A. Decreases
B. Increases
C. Remains unchanged
D. None of these
Molarity is defined as the number of gm moles of solute per ________________ of solvent?
A. Litre
B. kg
C. gm
D. c.c
Fractional solvent extraction______________________?
A. Employs only one solvent
B. Employs two solvents
C. Results in low interfacial tension
D. None of these
_______________ columns are used for liquid dispersion in a continuous gas phase ?
A. Packed
B. Pulse
C. Bubble cap
D. Sieve plate
In the constant rate period of the rate of drying curve for batch drying,_________________?
A. Cracks develop on the surface of the solid
B. Rate of drying decreases abruptly
C. Surface evaporation of unbound moisture occurs
D. None of these
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause ______________ plate requirement?
A. No change in theoretical
B. Marginal decrease in the number of
C. Major decrease in the number of
D. None of these
Leaching of coarse solid lumps is also termed as _____________________?
A. Decoction
B. Dissolution
C. Percolation
D. Agitation and settling
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
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