Chemical Reaction Engineering
In the reversible reaction of the type, A + B ⇋ AB, in general

Neither of the reactions will be en-dothermic
The combination reaction will be exothermic, while the dissociation reaction will be endothermic
Both forward and backward reactions will be exothermic
The combination reaction will be endothermic, while the dissociation reaction will be exothermic

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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.)

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

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