Effective diffusivity (DE) in a catalyst pellet is related to molecula – McqOptions

MCQOPTIONS

1.	Effective diffusivity (DE) in a catalyst pellet is related to molecular diffusivity (DN) and Knudsen diffusivity (DK) as_________________?
A.	DE = DM + DK
B.	1/DE = 1/DN + DK
C.	DE = DM . DE
D.	DE = DN/DE
Answer» C. DE = DM . DE

Discussion

No Comment Found

Related MCQs

Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature ?
With an increase in pressure in gaseous phase chemical reactions, the fractional conversion ______________ when the number of moles decreases?
With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction_________________?
With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?
With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?
With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?
With increase in temperature, the rate constant obeying Arrhenius equation____________________?
With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)?
With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be__________________?