Chemical Reaction Engineering
For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a

Batch reactor is preferred over a single CSTR for high yield
Tubular reactor is preferred over a single CSTR for high yield
Both A and B
Single CSTR is the most suitable

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

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

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Chemical Reaction Engineering
A space time of 3 hours for a flow reactor means that

Three reactor volumes of feed can be processed every hour
It takes three hours to dump the entire volume of the reactor with feed
Conversion is cent per cent after three hours
The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours

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Chemical Reaction Engineering
A trickle bed reactor is the one, which

Processes three reactants with same flow rate
Has altogether three streams either entering or leaving
Processes three reactants at different flow rates
Employs all the three phases (i.e.. .solid, liquid and gas)

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