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? | MCQ Hive

Chemical Engineering Chemical Reaction

Q 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?

A A. Film diffusion
B B. Diffusion through ash layer
C C. Chemical reaction
D D. Either a., b. or c.

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