Laboratory determination of the dif-fusivity of vapor is done by __________ method.
Select an option to see the answer and solution.
Chemical Engineering · all questionsMass Transfer
Mass Transfer
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
656
Questions
3/33
Page
Pick an option on a question to see the right answer and solution.
'Absorption with chemical reaction' is involved in the removal of
Select an option to see the answer and solution.
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.
Select an option to see the answer and solution.
Which of the following employs an accessory known as 'drift eliminator' ?
Select an option to see the answer and solution.
If f = moles of vapour present per mole of feed, then the slope of feed line is (Mcabe-Thiele method)
Select an option to see the answer and solution.
The assumption made in Elis method in distillation is that enthalpy concentration lines of vapor and liquid are
Select an option to see the answer and solution.
__________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.
Select an option to see the answer and solution.
In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency
Select an option to see the answer and solution.
The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is
Select an option to see the answer and solution.
In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of
Select an option to see the answer and solution.
The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.
Select an option to see the answer and solution.
Which of the following equipments is not used for gas dispersion?
Select an option to see the answer and solution.
The relation, Sc = Pr = 1, is valid, when the mechanism of __________ ansfer is same.
Select an option to see the answer and solution.
In case of a desorber (stripper), the
Select an option to see the answer and solution.
In case of an absorber, the operating
Select an option to see the answer and solution.
Dew point of an air-water vapor mixture
Select an option to see the answer and solution.
__________ extractor is used for the concentration of radioactive nuclear waste.
Select an option to see the answer and solution.
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.
Select an option to see the answer and solution.
Overall efficiency of the distillation column is
Select an option to see the answer and solution.
A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids)
Select an option to see the answer and solution.