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
Semibatch reactor is preferred, when a/an

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

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