CO2 can be absorbed by____________________?
A. Hot cupric oxide
B. Heated charcoal
C. Cold Ca(OH)2
D. Alumina
Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is_________________?
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is_________________?
A. Natural draft cooling tower
B. Induced draft cooling tower
C. Spray chamber
D. None of these
Solvent used in extractive distillation___________________?
Solvent used in extractive distillation___________________?
A. Changes the relative volatility of the original components
B. Should be of high volatility
C. Should form azeotropes with the original components
D. All A., B. and C.
Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is_________________?
Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is_________________?
A. Less
B. More
C. Same
D. Unpredictable
Which of the following remains constant during evaporative cooling process with recirculated water supply ?
Which of the following remains constant during evaporative cooling process with recirculated water supply ?
A. Relative humidity
B. Partial pressure of vapour
C. Wet bulb temperature
D. None of these
If a two phase system is in physical equilibrium; then it means that, the_____________________?
If a two phase system is in physical equilibrium; then it means that, the_____________________?
A. Escag tendency of each component from the liquid phase to the vapor phase is exactly
equal to that from vapor phase to liquid phase
B. Temperature of the liquid phase is equal to that of the vapor phase
C. Total pressure throughout the liquid phase is equal to that throughout the vapor phase
D. All A., B. and C.
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG ______________ the absorption factor?
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG ______________ the absorption factor?
A. Increases with increase in
B. Is one at unity value of
C. Both A. and B.
D. Neither A. nor B.
If a1 and a2 are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement ?
If a1 and a2 are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement ?
A. a1 = a2
B. a1 = 2a2
C. a1 = 0.5 a2
D. None of these
Percentage saturation is _______________ the relative saturation?
Percentage saturation is _______________ the relative saturation?
A. Always smaller than
B. Always greater than
C. Not related to
D. None of these
In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be_________________?
In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be_________________?
A. Liquid phase resistance-controlled
B. Gas phase resistance controlled
C. Impossible
D. Driven by a non-linear driving force