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

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

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Chemical Reaction Engineering
For all positive reaction orders for a particular duty,

Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
Mixed reactor is always larger than the plug-flow reactor
Reactor size is independent of the type of flow
Density variation during reaction affects design

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