Effective diffusivity (DE) in a catalyst pellet is related to molecular diffusivity (DN) and Knudsen diffusivity (DK) as_________________?

Related Mcqs:

The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CA n, then what is the value of n for this reaction ?

A. 0 B. 0.5 C. 1 D. 2...

Half life period of decomposition of a liquid ‘A’ by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ‘A’ is _____________ minutes?

A. 18 B. 24 C. 6 D. 12...

For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by __________________?

A. A Dirac delta function B. A step function C. A ramp function D. None of the above...

The exit age distribution of a fluid leaving a vessel (denoted by E) is used to study the extent of non-ideal flow in the vessel. The value of ∫∞ 0 E.dt is____________________?

A. 0 B. 1 C. ∞ D. √2π...

The enzyme which can catalyse the conversion of glucose to ethyl alcohol is ___________________?

A. Invertase B. Maltase C. Diastase D. Zymase...