According to Chilton-Colburn analogy for mass transfer, NSt.NSc 2/3 is equal to_________________?
A. f
B. f/2
C. 2f
D. 1/f
Month: February 2019
Wet bulb and dry bulb temperatures becomes identical at _______________ percent saturation curve?
Wet bulb and dry bulb temperatures becomes identical at _______________ percent saturation curve?
A. 100
B. 50
C. 78
D. None of these
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an _________________ law?
The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an _________________ law?
A. Exponential
B. Parabolic
C. Linear
D. Cubic
Out of two equilibrium curves, first one lies above the diagonal and the second lies below the diagonal in the x-y plot. It means that separation by distillation is_________________?
Out of two equilibrium curves, first one lies above the diagonal and the second lies below the diagonal in the x-y plot. It means that separation by distillation is_________________?
A. Not possible in the second case unless vacuum is applied
B. Not possible in the second case unless high pressure is applied
C. More readily done in the second case compared to first one
D. None of these
A distillation column separates 10000 kg/hr of a benzene-toluene mixture as shown in the figure below: In the figure xF, xD and xW represent the weight fraction of benzene in the feed, distillate and residue respectively. The reflux ratio is_______________ ?
A distillation column separates 10000 kg/hr of a benzene-toluene mixture as shown in the figure below: In the figure xF, xD and xW represent the weight fraction of benzene in the feed, distillate and residue respectively. The reflux ratio is_______________ ?
A. 0.5
B. 0.6
C. 1.0
D. 2.0
_________________ is the separation technique used for desalination of sea water ?
_________________ is the separation technique used for desalination of sea water ?
A. Thermal diffusion
B. Reverse osmosis
C. Adsorption
D. Absorption
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid _______________ that in dry packed tower ?
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid _______________ that in dry packed tower ?
A. Is greater than
B. Is lower than
C. Is same as
D. Cannot be predicted as data are insufficient
Free flowing granular materials can be best dried in a __________________ drier?
Free flowing granular materials can be best dried in a __________________ drier?
A. Rotary
B. Cylinder
C. Drum
D. Freeze
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 ?
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 ?
A. Wet bulb temperature
B. Partial pressure of water vapor
C. Relative humidity
D. None of these
Fractional solvent extraction______________________?
Fractional solvent extraction______________________?
A. Employs only one solvent
B. Employs two solvents
C. Results in low interfacial tension
D. None of these