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 Batch Tubular flow Stirred tank Fixed bed Batch Tubular flow Stirred tank ANSWER DOWNLOAD EXAMIANS APP
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 None of these The unit of space velocity is (time)⁻¹ 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 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 The unit of space velocity is (time)⁻¹ The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Film diffusion Either A, B or C Diffusion through ash layer Chemical reaction Film diffusion Either A, B or C Diffusion through ash layer Chemical reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt At the inlet At the outlet In the reactor Averaged over the inlet and outlet At the inlet At the outlet In the reactor Averaged over the inlet and outlet ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For all positive reaction orders for a particular duty, Mixed reactor is always larger than the plug-flow reactor Density variation during reaction affects design Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order Reactor size is independent of the type of flow Mixed reactor is always larger than the plug-flow reactor Density variation during reaction affects design Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order Reactor size is independent of the type of flow ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Bulk diffusion in catalyst pore __________ with increase in pressure. Increases Decreases Increases exponentially Remains unchanged Increases Decreases Increases exponentially Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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