Higher in P.F. reactor
Higher in CSTR
Same in both the reactors
Data insufficient; can’t be predicted
✅ The correct answer is option A.
Chemical Reaction Engineering MCQs
A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length
Decreases
Increases
Is at the highest allowable temperature throughout
First increases and then decreases
✅ The correct answer is option C.
Oil is hydrogenated using nickel catalyst in a __________ reactor.
Batch
Slurry
Fluidised bed
Fixed bed
✅ The correct answer is option B.
Which of the following is the most suitable for very high pressure gas phase reaction?
Batch reactor
Tubular flow reactor
Stirred tank reactor
Fluidised bed reactor
✅ The correct answer is option B.
Catalyst carriers
Have very high selectivity
Increase the activity of a catalyst
Provide large surface area with a small amount of active material
Inhibit catalyst poisoning
✅ The correct answer is option C.
In a semi-batch reactor
Velocity of reaction can be controlled
Maximum conversion can be controlled
Both the reactants flow counter-currently
Residence time is constant
✅ The correct answer is option A.
Collision theory gives the rate constant for bimolecular reaction as
K α √T.e-E/RT
K α eE/RT
K α e-E/RT
None of these
✅ The correct answer is option C.
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.
Absorption of A
Surface reaction between absorbed A and absorbed B
Surface reaction between absorbed A and B in the gas phase
Surface reaction between A in the gas phase and absorbed B
✅ The correct answer is option C.