Chemical Reaction Engineering
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

Slow reactions in catalyst of small pore diameter
Slow reactions in catalyst of large pore diameter
Fast reactions in catalyst of small pore diameter
Fast reaction in catalyst of large pore diameter

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In an ideal P.F.R. at steady state conditions

The composition of reactants remains constant along a flow path
There is no lateral mixing of fluid
There may be diffusion along the flow path
The conversion of the reactant varies from point to point along a flow path

ANSWER DOWNLOAD EXAMIANS APP