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