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