Chemical Reaction Engineering
For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is

Desorption of C
Surface reaction between absorbed A and absorbed B
Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase
Surface reaction between A in the gas phase and absorbed B

ANSWER DOWNLOAD EXAMIANS APP

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)
None of these
Reactor dispersion number (D/vL)

ANSWER DOWNLOAD EXAMIANS APP