Mass Transfer Quiz 9
1 / 50
Schmidt number and Lewis number for pure air at atmospheric conditions are respectively___________?
2 / 50
Separation of two or more components of a liquid solution cannot be achieved by_____?
3 / 50
Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ?A? to that of component ?B?, when__________?
4 / 50
Schmidt number is given by _____?
5 / 50
Powdery materials can be guarded against caking tendency on storage by__________?
6 / 50
Separation of the isotopes of helium for scientific investigations is done by_______?
7 / 50
Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the______?
8 / 50
Solvent used in extractive distillation_____?
9 / 50
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when______?
10 / 50
Rate of leaching increases with increasing________?
11 / 50
Priming in a distillation column__________?
12 / 50
Pick out the wrong statement?
13 / 50
Raoult?s law is applicable to the_______?
14 / 50
Powdery materials can be guarded against caking tendency on storage by_____?
15 / 50
Raoult?s law applies to the_____?
16 / 50
Separation of two volatile liquids by distillation makes use of their__________?
17 / 50
Reverse osmosis is also called__________?
18 / 50
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their______?
19 / 50
Prandtl number for water at 20?C is about _________?
20 / 50
Rotary dryers cannot handle ________ materials ?
21 / 50
Solvent used in extractive distillation___________?
22 / 50
Separation of two volatile liquids by distillation makes use of their_____?
23 / 50
Refractory bricks are usually dried in a _________ dryer?
24 / 50
Relative humidity is the ratio of the________?
25 / 50
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent ________?
26 / 50
Plate efficiency in a distillation column is reduced due to the _______ of liquid?
27 / 50
Radioactive nuclear waste is treated in______?
28 / 50
Raschig ring made of porcelain cannot be used for treating concentrated_____?
29 / 50
Plate efficiency_________?
30 / 50
Plate efficiency in a distillation column is reduced due to the ________ of liquid?
31 / 50
Relative volatility does not change appreciably with the change in_______?
32 / 50
Selectivity of the solvent used in solvent extraction should be)__________?
33 / 50
34 / 50
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the _________ of a fibre ?
35 / 50
Removal of _______ exemplifies an adsorption unit operation?
36 / 50
Raoult?s law does not apply, when the_____?
37 / 50
Sodium bicarbonate is produced during soda ash manufacture using a ________ tower?
38 / 50
Rose oil is extracted from rose leaves using _____ distillation?
39 / 50
Rayleigh equation applies to __________ distillation ?
40 / 50
Pore size of the molecular sieve 5A is ______ mm ?
41 / 50
Reboiler is considered as one theoretical plate, because_______?
42 / 50
Smoke is an example of _____?
43 / 50
Rayleigh?s equation applies to __________ distillation?
44 / 50
Small dia distillation column can be a ___________?
45 / 50
Sand is dried in foundries in a ________drier?
46 / 50
Pressure drop through plate tower as compared to that through packed tower, for the same duty will be_____?
47 / 50
Positive deviation from Raoult?s law means a mixture whose total pressure is_____?
48 / 50
Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?
49 / 50
Rayleigh?s equation applies to _________ distillation?
50 / 50
Ponchon-Savarit method analyses the fractional equipment based on_____?
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