Mass Transfer Quiz 6
1 / 50
In case of unsaturated air______?
2 / 50
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the___________?
3 / 50
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is___________?
4 / 50
In McCabe-Thiele method, at infinite reflux ratio_________?
5 / 50
Leaching of coarse solid lumps is also termed as _______?
6 / 50
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed______?
7 / 50
In distillation, overhead product contains ________?
8 / 50
In liquid extraction, if the selectivity is unity, then_____?
9 / 50
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at _________ reflux ?
10 / 50
In liquid-liquid extraction, the number of phases at plait point is ___________?
11 / 50
Ion exchange process is similar to_____?
12 / 50
In physical terms, Schmidt number means __________?
13 / 50
In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)______?
14 / 50
Inside the distillation column, the__________?
15 / 50
Inside the distillation columns, the __________?
16 / 50
In liquid extraction, if the selectivity is unity, then___________?
17 / 50
In case of unsaturated air__________?
18 / 50
In most of the vacuum crystalliser, vacuum is generally produced by means of a_______?
19 / 50
In McCabe-Thiele method, at infinite reflux ratio_____?
20 / 50
Laboratory determination of the diffusivity of vapor is done by ___________ method?
21 / 50
In distillation columns, the number of bubble caps per tray primarily depends upon the_________?
22 / 50
In stripping section of continuous distillation column, the_________?
23 / 50
In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase?
24 / 50
In gas-liquid contact operation, the number of ideal stages, N = (xa ? xb)/(xb ? x*b). This is true when the stripping factor ?S? is _________?
25 / 50
In the desorption of highly soluble gas from the liquid, the main resistance will be in the _______ phase?
26 / 50
In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in__________?
27 / 50
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be_____?
28 / 50
In saturated gas, the___________?
29 / 50
In case of non-ideal gases and liquids, the molal diffusivity _________?
30 / 50
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be_______?
31 / 50
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is__________?
32 / 50
In case of gases, the binary diffusivity is proportional to (where, P = pressure) ?
33 / 50
In rectifying section of a continuous distillation column, the______?
34 / 50
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_______?
35 / 50
In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)_________?
36 / 50
In paper industry, paper is dried in a ______ dryer ?
37 / 50
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the _______ number ?
38 / 50
Laboratory determination of the diffusivity of vapor is done by _______ method?
39 / 50
In steam distillation, the _______?
40 / 50
In the constant rate period of the rate of drying curve for batch drying,__________?
41 / 50
Large quantity of silica gel is normally dried in a __________ dryer?
42 / 50
Large scale drying of wheat is done in a _________ dryer?
43 / 50
In case of liquids, the binary diffusivity is proportional to (where, T = temperature) _______?
44 / 50
JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by_____?
45 / 50
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%) ?
46 / 50
In extractive distillation, solvent is_______?
47 / 50
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because________?
48 / 50
In which of the following unit operations, the selectivity is an important parameter ?
49 / 50
In triangular co-ordinates, the ternary composition point falls _____ of the triangle?
50 / 50
Langmuir equation is associated with__________?
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