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Chemical Reaction Engineering

Chemical Reaction Engineering
Holding time for flow reactors is __________ the space time, for constant fluid density

Equal to
Double
None of these
Triple

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Chemical Reaction Engineering
For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.

Fixed bed
Tubular flow
Stirred tank
Batch

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Chemical Reaction Engineering
For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is

22
2
4
11

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Chemical Reaction Engineering
For any reaction, we may write conversion as a function of

Time
All of these
Concentration
Temperature

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Chemical Reaction Engineering
Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot?

Ln CA0 Vs ln t1/2
CA0 Vs t1/2
Ln CA0 Vs t1/2
CA0 Vs ln t1/2

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Chemical Reaction Engineering
A catalyst in a chemical reaction

Alters the reaction mechanism
Decreases the activation energy
All of these
Increases the frequency of collisions of reacting species

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