1.6
2
2.24
2.5
✅ The correct answer is option D.
Chemical Reaction Engineering MCQs
Non-catalytic fluid-solid reactions are represented by __________ model.
Continuous reaction
Unreacted core
Both A and B
Neither A and B
✅ The correct answer is option C.
N’ plug flow reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for __________ order reactions.
First
Second
Third
Any
✅ The correct answer is option D.
Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.
First
Zero
Second
Third
✅ The correct answer is option C.
If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the
Pressure
Temperature
Both A & B
Neither A nor B
✅ The correct answer is option B.
Variables affecting the rate of homogeneous reactions are
Pressure and temperature only
Temperature and composition only
Pressure and composition only
Pressure, temperature and composition
✅ The correct answer is option D.
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.
Less than
Equal to
More than
Equal to or more than
✅ The correct answer is option D.
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.
Semi-batch
Tubular
Batch
Back-mix
✅ The correct answer is option D.
The percent conversion of ethanol in the reactor is
100
97.5
95
2.5
✅ The correct answer is option A.
A catalyst in a chemical reaction __________ free energy change in the reaction.
Increases
Decreases
Either A or B; depends on the type of catalyst
Neither A nor B
✅ The correct answer is option C.