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