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