Chemical Reaction Engineering
Which of the following is not a theory of homogeneous reaction?

Radiation hypothesis
None of these
Collision theory and activated complex theory
Chain reaction theory

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

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

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Chemical Reaction Engineering
The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the

Reaction is elementary but the molecularity may not be 2
Reaction is elementary with a molecularity of 2
Reaction may be elementary with molecularity of 2
Molecularity of the reaction is 2, but the reaction may not be elementary

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