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