221. 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
✅ The correct answer is option B.
Chemical Reaction Engineering MCQs
222. With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be
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.
223. 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.
225. Oil is hydrogenated using nickel catalyst in a __________ reactor.
Batch
Slurry
Fluidised bed
Fixed bed
✅ The correct answer is option B.
226. 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.
227. 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.
229. 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.
230. 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.