A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially
Correct Answer: Decreases ✔
Last Updated: February 17, 2019
Related MCQs
- 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 ?
- Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and __________?
- Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation?
- Humid volume is the total volume in m3 of 1 kg of __________?
- Which of the following is a suitable absorbent for removal of H2S from natural gas ?
- In case of non-ideal gases and liquids, the molal diffusivity __________?
- Unit of molal diffusivity is__________?
- Milk is dried usually in a __________ dryer?
- Penetration model (theory) for mass transfer was enunciated by __________?
- 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?