For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the _______________ is the controlling resistance?

Related Mcqs:

Batch process is preferred over continuous process, when the___________________?

A. Product yields and quality cannot be achieved in continuous process, because of long residence time B. Sales demand of product is not steady C. Same equipment cannot be used for several processes of the same nature D. All A., B. & C....

With increase in temperature, the rate constant obeying Arrhenius equation____________________?

A. Increases B. Decreases C. Decreases exponentially D. Can either increase or decrease; depends on the frequency factor...

In an ideal P.F.R. at steady state conditions ___________________?

A. The composition of reactants remains constant along a flow path B. The conversion of the reactant varies from point to point along a flow path C. There is no lateral mixing of fluid D. There may be diffusion along the flow path...

An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will__________________?

A. Be more in CSTR than in PFR B. Be more in PFR than in CSTR C. Be same in both cases D. Depend on the temperature...

What is the maximum possible value of FR(mole/sec.) ?

A. 1/3 B. 1/2 C. 2/3 D. 2...