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