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Mass Transfer Quiz 3

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Mass Transfer Quiz 3

1 / 50

Dry bulb temperature of the gas is ______ the wet bulb temperature?

2 / 50

Dryer widely used in a textile industry is _______ dryer?

3 / 50

Equilibrium-moisture curves of different solids ______ ?

4 / 50

During sensible cooling process ________?

5 / 50

Experimental determination of _________ is done by wetted wall column method?

6 / 50

Design calculation for multiple component distillation is done by__________?

7 / 50

Entrainer used in Azeotropic distillation should______?

8 / 50

Drying of a solid involves __________ transfer ?

9 / 50

Dew point of a gas-vapour mixture_______?

10 / 50

Extraction of penicillin employs a _________ extraction column?

11 / 50

Dew point of an air-water vapor mixture__________?

12 / 50

Diameter of raschig rings used in packed tower in industry is normally around _______ inches?

13 / 50

Critical humidity of a solid salt means the humidity_______?

14 / 50

Cox chart is useful in the design of_____?

15 / 50

Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the ________ with the concentration of the solution?

16 / 50

During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the_____?

17 / 50

Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in ______?

18 / 50

Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture ?

19 / 50

Detergent solution is dried to a powder in a __________?

20 / 50

During constant rate period, the rate of drying decreases with the________?

21 / 50

Experimental determination of ________ is done by wetted wall column method?

22 / 50

Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for__________?

23 / 50

During drying operation, it is easier to remove the _________ moisture ?

24 / 50

Flash distillation is _________?

25 / 50

Drift in a cooling tower is _____?

26 / 50

Desulphurisation of petrol is done in a _______?

27 / 50

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant________?

28 / 50

During the constant rate period of drying of a solid ?

29 / 50

Degree of freedom for leaching and solvent extraction process is_______?

30 / 50

Danckwerts developed the ______ theory?

31 / 50

Drying operation under vacuum is carried out to ___________?

32 / 50

Desirable value of absorption factor in an absorber is_____?

33 / 50

Dried finished product sampled from various parts of a _________ dryer exhibits nonuniformity in the moisture content?

34 / 50

Dry bulb temperature of unsaturated air is more than its _________ temperature?

35 / 50

Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) ?

36 / 50

Diameter to height ratio for a raschig ring is_______?

37 / 50

Deaeration (removal of O2) of water is done by__________?

38 / 50

Decoction refers to the use of solvent_________?

39 / 50

Fenske equation determines the ___________?

40 / 50

Flash distillation is suitable for the separation of components__________?

41 / 50

Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the__________?

42 / 50

Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the__________?

43 / 50

During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant ?

44 / 50

Dimension of mass diffusivity is the same as that of_______?

45 / 50

Dorr thickener is an equipment used for________?

46 / 50

Flash distillation is suitable for separating the constituents of a binary system, which _______?

47 / 50

During constant rate drying period, vaporisation rate per unit drying surface area _______?

48 / 50

Dorr thickener is an equipment used for_____?

49 / 50

Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the__________?

50 / 50

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______?

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