Chemical Reaction Engineering
The exit age distribution of fluid leaving a vessel is used to know the

Activation energies of a reaction
Extent of non-ideal flow in the vessel
Reaction mechanism
None of these

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Chemical Reaction Engineering
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.)

Reduced time (vt/V)
Thiele modulus (L√(k/D1)
Reactor dispersion number (D/vL)
None of these

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Chemical Reaction Engineering
The reactions of high molecularity are rare, because

Of requirement of very large concentration for such reactions
Of low probability of many body collisions
Many body collisions are not favoured energetically
Of very large activation energy of many bodies

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