A. Danckwerts
B. Toor and Marcello
C. Higbie
D. Kissinevskii
Correct Answer: Higbie ✔
Last Updated: February 17, 2019
Related MCQs
- For an absorber, both equilibrium and operating line will be straight for __________?
- An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________?
- Advantage of continuous drying over batch drying is that the__________?
- The relative saturation of an unsaturated mixture of gas and vapor is independent of the__________?
- In case of liquids, the binary diffusivity is proportional to (where, T = temperature) __________?
- Hypersorption refers to a __________ process?
- Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture?
- In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated?
- If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is__________?
- If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent?
- McCabe-Thiele method__________?
- The relation, Sc = Pr = 1, is valid, when the mechanism of __________ transfer is same?
- Dew point of an air-water vapor mixture__________?
- The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around__________?
- Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled__________?
- The equilibrium liquid composition compared to the vapor composition in case of__________?
- Dry bulb temperature of the gas is __________ the wet bulb temperature?
- Which of the following is not a unit of mass transfer co-efficient ?
- The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases ‘A’ and ‘B’ is__________?
- Rose oil is extracted from rose leaves using __________ distillation?
- Back-trapping in a distillation column ?
- In the constant rate period of the rate of drying curve for batch drying,__________?
- The most economical range of absorption factor is__________?
- In case of absorption, both the operating and equilibrium lines will be straight for__________?
- Bollman extractor__________?
- When the solvent dissolves very little of solute, then__________?
- Tea percolation employs__________?
- The equipment used in the extraction of highly corrosive radioactive liquids is__________?
- With increase in temperature, the solubility of gases in liquids, at fixed pressure__________?
- Degree of freedom for leaching and solvent extraction process is__________?
- Unit operation involved in the prilling of urea is__________?
- In physical terms, Schmidt number means __________?
- At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation?
- In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation?
- Flash distillation is suitable for separating the constituents of a binary system, which __________?
- In which of the following unit operations, the selectivity is an important parameter ?
- A coalescer in a mixer-settler liquid-liquid extraction column__________?
- During constant rate drying period, vaporisation rate per unit drying surface area __________?
- In a distillation column, with increase in the reflux ratio, the heat removed in the cooler __________?
- The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will__________?
- In most of the vacuum crystalliser, vacuum is generally produced by means of a__________?
- __________ is concerned with the adsorption equilibria?
- ‘ADDUCTS’ and ‘CLATHRATES’ are used in case of__________?
- The percentage humidity is less than the relative humidity only at __________ percent humidity?
- At constant pressure, with increase of temperature, the dew point will __________?
- NSc/NPr is called the__________?
- The Schmidt number which is defined as, μ/ρ D, is the ratio of the__________?
- An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii) __________?
- In stripping section of continuous distillation column, the__________?
- The suitable evaporator for concentration of foaming liquids is a __________ evaporator?
- Mass transfer co-efficient varies as DAB 0.5, according to the __________ theory?