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