A. Increases
B. Decreases
C. Remains unchanged
D. Depends on the pressure of the system
Correct Answer: Decreases ✔
Last Updated: February 18, 2019
Related MCQs
- In saturated gas, the__________?
- Which of the following remains constant during sensible cooling process ?
- For contacting a highly soluble gas with a liquid __________?
- The assumption made in Elis method in distillation is that enthalpy concentration lines of vapor and liquid are __________?
- Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in __________?
- The binary diffusivity in gases does not depend upon the __________?
- The Knudsen diffusivity is dependent on the __________?
- Overall efficiency of the distillation column is __________?
- For a binary mixture with low relative volatility, continuous rectification to get pure products will require__________?
- Critical humidity of a solid salt means the humidity__________?
- CO2 can be absorbed by__________?
- The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is__________?
- Solvent used in extractive distillation__________?
- Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is__________?
- Which of the following remains constant during evaporative cooling process with recirculated water supply ?
- If a two phase system is in physical equilibrium; then it means that, the__________?
- In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor?
- 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 ?
- Percentage saturation is __________ the relative saturation?
- 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__________?
- Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by __________ distillation?
- When the temperature and humidity of air is low, we usually use __________ draft cooling tower?
- In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the__________?
- Leaching of sugar from sugar beets is done by__________?
- In an absorber, HETP does not vary with the__________?
- Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air ?
- Which of the following quantities need not be fixed before starting the design of a cocurrent absorber ?
- During drying operation, it is easier to remove the __________ moisture ?
- In extractive distillation, solvent is__________?
- At a fixed total pressure, humidity depends only on the __________?
- The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________?
- The diffusivity D. in a binary gas mixture is related to the temperature (T) as__________?
- The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its__________?
- An Azeotropic mixture is a __________ mixture?
- Inside the distillation columns, the __________?
- Total reflux in a distillation operation requires minimum__________?
- Boiling point diagram is not affected by the ambient__________?
- Dry bulb temperature of unsaturated air is more than its __________ temperature?
- Inside the distillation column, the__________?
- A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C?
- Chemisorption (chemical adsorption) is__________?
- The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line) ?
- When the feed to a distillation column is a saturated liquid, slope of the feed line is__________?
- Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for__________?
- Solvent used in extractive distillation__________?
- As the reflux ratio in a distillation column is increased from the minimum, the__________?
- Make up water is supplied during cooling tower operation to compensate for water losses due to__________?
- An ideal tower packing should not __________?
- Positive deviation from Raoult’s law means a mixture whose total pressure is__________?
- (NSh/NRe.NSc) is termed in mass transfer operation as the __________?
- The operating line for an absorber is curved, when plotted in terms of __________?