Chemical Reaction Engineering
The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line?

XA Vs ln τ
XA/(1 - XA)Vs τ
XA(1 - XA)Vs τ
XA Vs . τ

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

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
High recycle for pure gas

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Chemical Reaction Engineering
Batch process is preferred over continuous process, when the

Same equipment can not be used for several processes of the same nature
Product yields and quality can not be achieved in continuous process, because of long residence time
All of these
Sales demand of product is not steady

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