Related Questions

An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction
A Is maximum at the inlet of the reactor
B Goes through a maximum along the length of the reactor
C Goes through a minimum along the length of the reactor
D Is maximum at the exit of the reactor
An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is
A Maximum at the inlet of the reactor
B Maximum at the exit of the reactor
C Maximum at the centre of the reactor
D Constant throughout the reactor
With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)
A Increases
B Decreases
C Remains same
D Increases linearly
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?
A Temperature should be high in the beginning and decreased towards the end of the reaction
B Very low temperature should be used throughout the reaction
C Very high temperature should be used throughout the reaction
D None of these
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always
A 1
B >1
C Equal to the order of reaction
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is
A 1
B >1
C ∞
D ≥1
For a first order reaction carried out in a plug flow reactor, the space time is
A $$\frac{1}{{\text{K}}}\ln \frac{{{{\text{C}}_0}}}{{\text{C}}}$$
B $$\frac{1}{{\text{K}}}\ln \frac{{\text{C}}}{{{{\text{C}}_0}}}$$
C $${\text{K}}\ln \frac{{{{\text{C}}_0}}}{{\text{C}}}$$
D $${\text{K}}\ln \frac{{\text{C}}}{{{{\text{C}}_0}}}$$
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.
A Greater than
B Equal to
C Smaller than
D Unpredictable from the data
For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.
A Stirred tank
B Tubular flow
C Batch
D Fixed bed
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
A Cracking
B Fractional distillation
C Full distillation
D Carbonisation

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