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