Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

All of these
Undersirable side reaction (at high concentration of one of the reactants) is to be avoided
A gas is to be reacted with liquid (e.g. hydrogenation of fat)
A highly exothermic reaction is to be controlled

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP