Chemical Reaction Engineering
In case of staged packed bed reactors carrying out exothermic reaction, use

High recycle for pure gas
All of these
Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature
Plug flow for dilute liquid requiring no large preheating of feed

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Chemical Reaction Engineering
Pick out the wrong statement pertaining to space velocity of flow reactors.

The unit of space velocity is (time)⁻¹
The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor
The space velocity of 3 hr⁻¹ means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour
None of these

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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

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

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