Chemical Reaction Engineering
Pick out the wrong statement pertaining to space velocity of flow reactors.

The space velocity of 3 hr⁻¹ means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour
The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor
None of these
The unit of space velocity is (time)⁻¹

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Chemical Reaction Engineering
In an ideal P.F.R. at steady state conditions

There is no lateral mixing of fluid
There may be diffusion along the flow path
The conversion of the reactant varies from point to point along a flow path
The composition of reactants remains constant along a flow path

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