The film penetration model of mass transfer was enunciated by______________________?
A. Gilliland
B. Toor and Marcello
C. Stefan
D. Fick
Month: February 2019
(NRe . NSc) is termed in mass transfer operation as the ______________ number?
(NRe . NSc) is termed in mass transfer operation as the ______________ number?
A. Stanton
B. Sherwood
C. Peclet
D. None of these
In McCabe-Thiele method, at infinite reflux ratio________________?
In McCabe-Thiele method, at infinite reflux ratio________________?
A. The overhead product is minimum
B. Both the operating lines coincide with diagonal
C. Both A. and B.
D. Neither A. nor B.
With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?
With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?
A. Increases
B. Decreases
C. Remain same
D. May increase or decrease; depends on system
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called__________________?
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called__________________?
A. Decoction
B. Percolation
C. Elutriation or elution
D. None of these
The recovery of penicillin from the acidified fermentation broth is done by__________________?
The recovery of penicillin from the acidified fermentation broth is done by__________________?
A. Distillation
B. Evaporation
C. Absorption
D. Liquid extraction
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be_________________?
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be_________________?
A. 1
B. > 1
C. < 1
D. ≤ 1
Molarity is defined as the number of gm moles of solute per ________________ of solvent?
Molarity is defined as the number of gm moles of solute per ________________ of solvent?
A. Litre
B. kg
C. gm
D. c.c
Adsorption is a unit operation which generally involves _______________ systems?
Adsorption is a unit operation which generally involves _______________ systems?
A. Liquid-solid
B. Gas-solid
C. Fluid-solid
D. Solid-solid
Agitator is provided in a crystalliser for____________________?
Agitator is provided in a crystalliser for____________________?
A. Avoiding deposition on cooler surfaces
B. Formation of nuclei
C. Crystal growth
D. All A., B. and C.