Question
a.
The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are the same for NSc = NPr = 1.
b.
1 Nm³ of dry air is lighter than 1Nm³ of humid air.
c.
The Lewis number of a mixture is unity, when the thermal diffusivity is equal to the mass diffusivity.
d.
An azeotropic mixture of two liquids has boiling point higher than either of them, when it shows negative deviation from Raoult's Law.
Posted under Basic Chemical Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. Pick out the wrong statement.
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.
View solution
Q. At constant pressure, with increase of temperature, the dew point will
View solution
Q. For a single component absorber, the operating line is straight only when plotted in term of __________ units.
View solution
Q. Raschig ring made of procelain cannot be used for treating concentrated
View solution
Q. H₂S present in naphtha reformed gas is removed by absorbing with
View solution
Q. During constant rate drying period, vaporisation rate per unit drying surface area
View solution
Q. Pick out the wrong statement.
View solution
Q. In rectifying section of a continuous distillation column, the
View solution
Q. For a distillation column operating at minimum reflux, the
View solution
Q. 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))
View solution
Q. Flash distillation is suitable for the separation of components
View solution
Q. In Mcabe-Thiele method, at infinite reflux ratio
View solution
Q. Leaching rate is independent of the
View solution
Q. Molality is defined as the number of gm moles of solute per __________ of solvent.
View solution
Q. __________ is concerned with the adsorption equilibria.
View solution
Q. Fractional solvent extraction
View solution
Q. In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be
View solution
Q. At 750°K and 1 atm, the approximate value of Schmidt number for air is
View solution
Q. Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.
View solution
Q. Which of the following is used for the concentration of rubber latex ?
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
