Which of the following is not a dimension-less group used in catalysis ? (where,

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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.)

Options:

A . Reactor dispersion number (D/vL)

B . Reduced time (vt/V)

C . Thiele modulus (L√(k/D1)

D . None of these

Answer: Option D

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