Chemical Reaction Engineering
In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

Less than
Data insufficient; can't be predicted
Same as
More than

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Chemical Reaction Engineering
In a zero order reaction, reactants concentration does not change with time and the

Reaction rate is trebled when the initial concentration is trebled
Time for half change is half the time taken for completion of the reaction
Time for half change is independent of the initial concentration
Time for completion of the reaction is independent of the initial concentration

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Chemical Reaction Engineering
In an ideal mixed reactor (at steady state), the

Composition throughout the reactor remains same
All of these
Space time is equivalent to holding time for constant density systems
Exit stream has the same composition as the fluid within the reactor

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