Which of the following is not a dimension-less group used in catalysis? (Where, D = dispersion co-efficient, cm2/sec.D1 = diffusion co-efficient; cm2/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm3/sec. V = volume, cm3.) ?
Correct answer: D
Explanation
All options A, B, and C are examples of dimension-less groups used in catalysis. Therefore, 'None of these' is the correct choice.